Best Thermal Base Layer Men of 2026

Last updated on 03/04/2026

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Mountain Warehouse Merino Mens Long Sleeve Thermal Baselayer Top - Lightweight Jumper, Antibacterial & Quick Drying Sweatshirt - for Travel & Outdoors Black M

Mountain Warehouse Merino Mens Long Sleeve Thermal Baselayer Top - Lightweight Jumper, Antibacterial & Quick Drying Sweatshirt - for Travel & Outdoors Black M

Mountain Warehouse

Why we love it

Keeps you fresh and odour-free.
Wicks moisture, dries quickly.
Light, comfortable and packable.

Main Highlights

Merino - Very warm high quality wool, naturally antibacterial properties to keep you fresher for longer
Antibacterial - Stay fresh & odour free for longer while walking and running
Lightweight - Great for travelling, comfortable to wear and easy to pack
2 year warranty - Includes a 2-year warranty for guaranteed quality and peace of mind

9.8

Exceptional

9.8

Exceptional

Mountain Warehouse

Mountain Warehouse Merino Mens Long Sleeve Thermal Baselayer Top - Lightweight Jumper, Antibacterial & Quick Drying Sweatshirt - for Travel & Outdoors Black M

Why we love it

Keeps you fresh and odour-free.
Wicks moisture, dries quickly.
Light, comfortable and packable.

Main Highlights

Merino - Very warm high quality wool, naturally antibacterial properties to keep you fresher for longer
Antibacterial - Stay fresh & odour free for longer while walking and running
Lightweight - Great for travelling, comfortable to wear and easy to pack
2 year warranty - Includes a 2-year warranty for guaranteed quality and peace of mind

Value for Money

Mountain Warehouse Mens Merino Thermal Base Layer Trousers - Lightweight Mens Pants, Antibacterial, Breathable Bottoms - for Camping in Black L

Mountain Warehouse Mens Merino Thermal Base Layer Trousers - Lightweight Mens Pants, Antibacterial, Breathable Bottoms - for Camping in Black L

Mountain Warehouse

Why we love it

High-quality, naturally antibacterial Merino wool.
Effective moisture-wicking for dryness.
Breathable fabric for comfort.

Main Highlights

Merino - Very warm high quality wool, naturally antibacterial properties to keep you fresher for longer
Quick Dry - Super absorbent fibres mean the moisture is spread across the fabric, allowing to dry quickly
Antibacterial - Stay fresh & odour free for longer while walking and running
Lightweight - Comfortable to wear, pack and travel with. Ideal for active use
Elastic Waistband - For improved fit and comfort
3 year guarantee

Mountain Warehouse Mens Merino Thermal Base Layer Trousers - Lightweight Mens Pants, Antibacterial, Breathable Bottoms - for Camping in Black L

Why we love it

High-quality, naturally antibacterial Merino wool.
Effective moisture-wicking for dryness.
Breathable fabric for comfort.

Main Highlights

Merino - Very warm high quality wool, naturally antibacterial properties to keep you fresher for longer
Quick Dry - Super absorbent fibres mean the moisture is spread across the fabric, allowing to dry quickly
Antibacterial - Stay fresh & odour free for longer while walking and running
Lightweight - Comfortable to wear, pack and travel with. Ideal for active use
Elastic Waistband - For improved fit and comfort
3 year guarantee

Canterbury Mens Thermoreg Long Sleeve Top Base Layer - Black - 4XL

Canterbury Mens Thermoreg Long Sleeve Top Base Layer - Black - 4XL

Canterbury

Why we love it

ThermoReg keeps us warm.
Comfortable spandex stretch fit.
Quick-dry reduces odour.

Main Highlights

ALL-DAY COMFORT: This long sleeve top is engineered to make training, workouts and cheering the team from the stands more comfortable, because life doesn't stop when the weather turns.
GREAT FOR COLD WEATHER: ThermoReg is ideal for heat retention and thermal regulation. It will keep you going when the going gets tough.
DEFEATS ODOR: An antibacterial finish makes it tough for odour to cling, while the quick drying fabric means they're ready faster after a wash.
Offset side seams for improved range of motion
RELENTLESS DRIVE: For over a century Canterbury has dedicated itself to making stylish, crafted products that are built to last. We apply a combination of respect for history and forward-looking product development across all of our ranges. We take our responsibility to the game very seriously. Where tradition meets design – that’s where you'll find Canterbury
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Sport type: sport_type

Canterbury Mens Thermoreg Long Sleeve Top Base Layer - Black - 4XL

Why we love it

ThermoReg keeps us warm.
Comfortable spandex stretch fit.
Quick-dry reduces odour.

Main Highlights

ALL-DAY COMFORT: This long sleeve top is engineered to make training, workouts and cheering the team from the stands more comfortable, because life doesn't stop when the weather turns.
GREAT FOR COLD WEATHER: ThermoReg is ideal for heat retention and thermal regulation. It will keep you going when the going gets tough.
DEFEATS ODOR: An antibacterial finish makes it tough for odour to cling, while the quick drying fabric means they're ready faster after a wash.
Offset side seams for improved range of motion
RELENTLESS DRIVE: For over a century Canterbury has dedicated itself to making stylish, crafted products that are built to last. We apply a combination of respect for history and forward-looking product development across all of our ranges. We take our responsibility to the game very seriously. Where tradition meets design – that’s where you'll find Canterbury
Item width: item_width
Sport type: sport_type

Men’s Thermal Underwear Set, Thermal Underwear Men Winter Soft Functional Underwear Sleeve Top Long Johns Set Quick Dry Base Layer Sport Compression Suit for Workout Skiing Running Hiking Cycling M

Men’s Thermal Underwear Set, Thermal Underwear Men Winter Soft Functional Underwear Sleeve Top Long Johns Set Quick Dry Base Layer Sport Compression Suit for Workout Skiing Running Hiking Cycling M

MOBIUSPHY

Why we love it

Keeps you warm and cozy.
Breathable and quick-drying fabric.
Great for multiple activities.

Main Highlights

✿Warm and Lose weight✿: This thermal set comes with lightweight provided excellent keep warm performance and windproof function in the cold weather. These Are Perfect for Use Underneath Formal Or Casual Attire at Work Or for A Day Out.
✿Breathability and Quick Dry✿: Breathable and moisture wicking fabric is perfect to keep sweat away and dry fast, the thermal base layer men perfectly repel odors and unpleasant smells left behind from sweat and dirt.
✿Excellent Flexibility✿: The men thermal underwaer design with 90% polyester and 10% Elastane, offers excellent elasticity, comfort and full range of movement to stretch your muscle, protecting your muscle trauma during training and keeping you stay comfortable and freedom.
✿Multiple Uses✿: Men’s Thermal Underwear Set to be Wear Alone at Home or Add an Extra Layer of Warmth Under Your Clothes 2, This thermal underwear men for cold weather is idea gear for all kinds of activities too, such as training, running, cycling, yoga, skiing, etc.
✿Breathability and Quick Dry✿: Moisture-regulating fibers can wick sweat away from the body and keep it dry and warm. It meets all the requirements for sports, functional and thermal underwear.

Men’s Thermal Underwear Set, Thermal Underwear Men Winter Soft Functional Underwear Sleeve Top Long Johns Set Quick Dry Base Layer Sport Compression Suit for Workout Skiing Running Hiking Cycling M

Why we love it

Keeps you warm and cozy.
Breathable and quick-drying fabric.
Great for multiple activities.

Main Highlights

✿Warm and Lose weight✿: This thermal set comes with lightweight provided excellent keep warm performance and windproof function in the cold weather. These Are Perfect for Use Underneath Formal Or Casual Attire at Work Or for A Day Out.
✿Breathability and Quick Dry✿: Breathable and moisture wicking fabric is perfect to keep sweat away and dry fast, the thermal base layer men perfectly repel odors and unpleasant smells left behind from sweat and dirt.
✿Excellent Flexibility✿: The men thermal underwaer design with 90% polyester and 10% Elastane, offers excellent elasticity, comfort and full range of movement to stretch your muscle, protecting your muscle trauma during training and keeping you stay comfortable and freedom.
✿Multiple Uses✿: Men’s Thermal Underwear Set to be Wear Alone at Home or Add an Extra Layer of Warmth Under Your Clothes 2, This thermal underwear men for cold weather is idea gear for all kinds of activities too, such as training, running, cycling, yoga, skiing, etc.
✿Breathability and Quick Dry✿: Moisture-regulating fibers can wick sweat away from the body and keep it dry and warm. It meets all the requirements for sports, functional and thermal underwear.

Under Armour Men UA HG Armour Comp LS, Long-Sleeve Sports Top, Breathable Long-Sleeved Top for Men

Under Armour Men UA HG Armour Comp LS, Long-Sleeve Sports Top, Breathable Long-Sleeved Top for Men

Under Armour

22% Off

Why we love it

Quick-drying for superb comfort.
Advanced fabric for sweat control.
Anti-odour for all-day freshness.

Main Highlights

Ideal Sports Clothing – The long-sleeve training shirt dries quickly, protects from sun rays and offers absolute comfort when worn.
Sweat Less – With its innovative fabric, the quick-drying sports shirt draws sweat away from the skin, while the net insert ensures extra ventilation.
Optimal Comfort – The long-sleeve top has all the advantages of UA compression, but is still comfortable enough to be worn all day.
All-day freshness – With anti-odour technology, the running shirt prevents the growth of odour-causing bacteria, keeping you fresh all day.
Material and Fit – Under Armour men’s compression top UA HG Armour Comp LS. Sportshirt. Fit: Compression. Material: Polyester/elastane

Under Armour Men UA HG Armour Comp LS, Long-Sleeve Sports Top, Breathable Long-Sleeved Top for Men

22% Off

Why we love it

Quick-drying for superb comfort.
Advanced fabric for sweat control.
Anti-odour for all-day freshness.

Main Highlights

Ideal Sports Clothing – The long-sleeve training shirt dries quickly, protects from sun rays and offers absolute comfort when worn.
Sweat Less – With its innovative fabric, the quick-drying sports shirt draws sweat away from the skin, while the net insert ensures extra ventilation.
Optimal Comfort – The long-sleeve top has all the advantages of UA compression, but is still comfortable enough to be worn all day.
All-day freshness – With anti-odour technology, the running shirt prevents the growth of odour-causing bacteria, keeping you fresh all day.
Material and Fit – Under Armour men’s compression top UA HG Armour Comp LS. Sportshirt. Fit: Compression. Material: Polyester/elastane

CL convallaria Men's Thermal Underwear Long Johns Set Winter Gift Hunting Gear Sport Base Layer Bottom Top

CL convallaria Men's Thermal Underwear Long Johns Set Winter Gift Hunting Gear Sport Base Layer Bottom Top

CL convallaria

Why we love it

Super warm and windproof.
Flexible and elasti.
Breathable with quick-dry fabric.

Main Highlights

Super warm: Our mens thermal underwear are made of fleece lined fabric with high heat retention and windproof function. The high-density microfibers can lock the heat in your body, keep you warm all day
Flexible and elastic: The long johns for men are made of advanced 4 way stretch fabric which is flexible. It can greatly increase your freedom of movement and ensure that you are not tied down in your daily life
Breathable and quick dry: These men's base layers have superior moisture-wicking ability. When you sweat it can be well absorbed and quickly evaporated.The excellent air permeability can keep your body dry
Comfortbale and soft: The base layer set is midweight and the fabiric is ultra soft that feels great on th skin. The thermal bottoms are fitted with an elastic waistband for added comfort.We also improved the stitch of the pants for a more classic look
Ideal for: Our products have many applications; Not only can be worn at home, but also suitable for running, cycling, skiing, hunting, workout, climbing, hiking, etc. It can also be used as a gift for your husband, son, grandfather, and friends

CL convallaria Men's Thermal Underwear Long Johns Set Winter Gift Hunting Gear Sport Base Layer Bottom Top

Why we love it

Super warm and windproof.
Flexible and elasti.
Breathable with quick-dry fabric.

Main Highlights

Super warm: Our mens thermal underwear are made of fleece lined fabric with high heat retention and windproof function. The high-density microfibers can lock the heat in your body, keep you warm all day
Flexible and elastic: The long johns for men are made of advanced 4 way stretch fabric which is flexible. It can greatly increase your freedom of movement and ensure that you are not tied down in your daily life
Breathable and quick dry: These men's base layers have superior moisture-wicking ability. When you sweat it can be well absorbed and quickly evaporated.The excellent air permeability can keep your body dry
Comfortbale and soft: The base layer set is midweight and the fabiric is ultra soft that feels great on th skin. The thermal bottoms are fitted with an elastic waistband for added comfort.We also improved the stitch of the pants for a more classic look
Ideal for: Our products have many applications; Not only can be worn at home, but also suitable for running, cycling, skiing, hunting, workout, climbing, hiking, etc. It can also be used as a gift for your husband, son, grandfather, and friends

Under Armour Men UA HG Armour Leggings, Comfortable and robust gym leggings, lightweight and elastic thermal underwear with compression fit

Under Armour Men UA HG Armour Leggings, Comfortable and robust gym leggings, lightweight and elastic thermal underwear with compression fit

Under Armour

15% Off

Why we love it

Enhances movement with lightweight fabric.
Innovative design elevates durability.
Quick-drying with extra ventilation.

Main Highlights

UNDER ARMOUR HEATGEAR LEGGINGS: Lightweight, fitted baselayer engineered for seamless comfort and unrestricted mobility during training and sports. The ergonomic construction keeps seams away from high-abrasion zones, enhancing both durability and performance.
ADVANCED HEATGEAR FABRIC: Delivers superior coverage without weighing you down. Updated gusset design provides ultimate comfort and range of motion. Ultra-soft, quick-drying material feels smooth against the skin, wicks sweat efficiently, and keeps you comfortable throughout activity.
COOL & BREATHABLE: Strategically placed mesh panels enhance airflow in high-heat zones, maintaining comfort during high-intensity movement. Odor control technology helps minimize odor for lasting freshness.
STRETCH & SECURE FIT: Built with 4-way stretch fabric that moves effortlessly with your body, these leggings deliver flexibility without compromise. The elastic waistband provides a snug, stay-put fit, while the drop-in Strength Pocket on the right side keeps essentials close and secure.
EMPOWERING PERFORMANCE: Created with innovation and purpose, Under Armour brings performance solutions you never knew you needed and can't imagine living without.

Under Armour Men UA HG Armour Leggings, Comfortable and robust gym leggings, lightweight and elastic thermal underwear with compression fit

15% Off

Why we love it

Enhances movement with lightweight fabric.
Innovative design elevates durability.
Quick-drying with extra ventilation.

Main Highlights

UNDER ARMOUR HEATGEAR LEGGINGS: Lightweight, fitted baselayer engineered for seamless comfort and unrestricted mobility during training and sports. The ergonomic construction keeps seams away from high-abrasion zones, enhancing both durability and performance.
ADVANCED HEATGEAR FABRIC: Delivers superior coverage without weighing you down. Updated gusset design provides ultimate comfort and range of motion. Ultra-soft, quick-drying material feels smooth against the skin, wicks sweat efficiently, and keeps you comfortable throughout activity.
COOL & BREATHABLE: Strategically placed mesh panels enhance airflow in high-heat zones, maintaining comfort during high-intensity movement. Odor control technology helps minimize odor for lasting freshness.
STRETCH & SECURE FIT: Built with 4-way stretch fabric that moves effortlessly with your body, these leggings deliver flexibility without compromise. The elastic waistband provides a snug, stay-put fit, while the drop-in Strength Pocket on the right side keeps essentials close and secure.
EMPOWERING PERFORMANCE: Created with innovation and purpose, Under Armour brings performance solutions you never knew you needed and can't imagine living without.

Helly Hansen Mens Lifa Stripe HH Crew Base Layer Top, L, Black

Helly Hansen Mens Lifa Stripe HH Crew Base Layer Top, L, Black

Helly Hansen

35% Off

Why we love it

Iconic stripe design.
Best for aerobic activity.
Professional athletes' choice.

Main Highlights

The original technical Helly Hansen long-sleeve base layer with an iconic stripe design
The original technical Helly Hansen base layer has never looked better We took inspiration from the iconic sailor strip for this long-sleeve crew Our technical base layer provides breathable warmth, moisture management and comfort during any aerobic activity It’s ideal for sailing, hiking, training, climbing, skIIng and more  We've been excelling at HH LIFA base layer technology for 40 years That’s why our base layers are the go-to choice for professional athletes
Shell: 100% Polypropylene
Items delivered: 1x Helly Hansen Mens Lifa Stripe HH Crew Base Layer Top,L,Black
Low bulk cuffs
Flatlock stitching
Allergy neutral
Non itch and lightweight
Dry next to skin
Lifa Stay dry technology

Helly Hansen Mens Lifa Stripe HH Crew Base Layer Top, L, Black

35% Off

Why we love it

Iconic stripe design.
Best for aerobic activity.
Professional athletes' choice.

Main Highlights

The original technical Helly Hansen long-sleeve base layer with an iconic stripe design
The original technical Helly Hansen base layer has never looked better We took inspiration from the iconic sailor strip for this long-sleeve crew Our technical base layer provides breathable warmth, moisture management and comfort during any aerobic activity It’s ideal for sailing, hiking, training, climbing, skIIng and more  We've been excelling at HH LIFA base layer technology for 40 years That’s why our base layers are the go-to choice for professional athletes
Shell: 100% Polypropylene
Items delivered: 1x Helly Hansen Mens Lifa Stripe HH Crew Base Layer Top,L,Black
Low bulk cuffs
Flatlock stitching
Allergy neutral
Non itch and lightweight
Dry next to skin
Lifa Stay dry technology

romision Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set Top and Bottom for Cold Weather XS-4XL Black

romision Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set Top and Bottom for Cold Weather XS-4XL Black

romision

Why we love it

Warm and cozy fabric blend.
Moisture wicking keeps you dry.
Durable for long-lasting use.

Main Highlights

Extreme Warmth and Comfort: Made from 90% polyester and 10% spandex super soft fabric, they also help reduce pilling and shrinkage. Adding some extra cozy, warm fleece to the mix, our long johns amazingly help to tackle extreme cold weather conditions
Strong Moisture Wicking: The unique breathable, moisture-wicking fibers on our thermal underwear will wick away moisture to keep you dry with no sticky or clammy feeling so you can wear them all day for your work or snow adventure
4-Way Stretch: The design of the Four-way stretch make the reach and squat more comfortable while retaining excellent elasticity and durability for maximum mobility. Use high-quality stitching to beat super-active days and many muddy adventures
Easy Care Base Layer Set: Tagless design in order to obtain greater comfort. The highest dyeing fastness even after multiple washing will not fade and shrink. Fitted with fashion elastic band for added comfort to keep bottoms from falling down
Best Gift Choice: We stock these crew or turtle neck thermals for men in a wide range of sizes. If your family enjoys hunting;camping;snowboarding;skiing;cycling or running then it will be a great choice. A wonderful Gift for mens Christmas Birthday

romision Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set Top and Bottom for Cold Weather XS-4XL Black

Why we love it

Warm and cozy fabric blend.
Moisture wicking keeps you dry.
Durable for long-lasting use.

Main Highlights

Extreme Warmth and Comfort: Made from 90% polyester and 10% spandex super soft fabric, they also help reduce pilling and shrinkage. Adding some extra cozy, warm fleece to the mix, our long johns amazingly help to tackle extreme cold weather conditions
Strong Moisture Wicking: The unique breathable, moisture-wicking fibers on our thermal underwear will wick away moisture to keep you dry with no sticky or clammy feeling so you can wear them all day for your work or snow adventure
4-Way Stretch: The design of the Four-way stretch make the reach and squat more comfortable while retaining excellent elasticity and durability for maximum mobility. Use high-quality stitching to beat super-active days and many muddy adventures
Easy Care Base Layer Set: Tagless design in order to obtain greater comfort. The highest dyeing fastness even after multiple washing will not fade and shrink. Fitted with fashion elastic band for added comfort to keep bottoms from falling down
Best Gift Choice: We stock these crew or turtle neck thermals for men in a wide range of sizes. If your family enjoys hunting;camping;snowboarding;skiing;cycling or running then it will be a great choice. A wonderful Gift for mens Christmas Birthday

BENNIES Thermal Underwear Mens Set Mens Thermals Top and Bottoms Long Sleeve Tops Long Johns Thermal Base Layer Thermals Men's Thermal Underwear T Shirt for Winter Ski Sports Black L

BENNIES Thermal Underwear Mens Set Mens Thermals Top and Bottoms Long Sleeve Tops Long Johns Thermal Base Layer Thermals Men's Thermal Underwear T Shirt for Winter Ski Sports Black L

BENNIES

27% Off

Why we love it

Retains warmth effectively.
Comfortable and skin-friendly.
Excellent breathability.

Main Highlights

Warmth: Thermal underwear mens uses high-quality insulating materials that can effectively store body temperature, prevent heat loss and provide excellent insulation for the wearer
Comfort: Mens thermal underwear is close-fitting clothing, has good skin-friendliness, is comfortable to wear, does not cause a sense of restraint, and is suitable for daily wear.
Good breathability: Mens thermals has good breathability, can absorb sweat from the skin and quickly discharge it, keeping the body dry and comfortable.
Elasticity: Appropriate elasticity helps men's thermal underwear fit the body curve, provide better comfort and support, and avoid looseness or restraint. High elasticity makes the wearer more flexible during exercise without restricting the natural movement of the body.
Versatility: Men's thermal underwear can be used as a base layer and paired with a coat to adapt to different climates and various activity needs. These characteristics make thermal men not only suitable for cold weather, but also for various outdoor activities and daily wear.

BENNIES Thermal Underwear Mens Set Mens Thermals Top and Bottoms Long Sleeve Tops Long Johns Thermal Base Layer Thermals Men's Thermal Underwear T Shirt for Winter Ski Sports Black L

27% Off

Why we love it

Retains warmth effectively.
Comfortable and skin-friendly.
Excellent breathability.

Main Highlights

Warmth: Thermal underwear mens uses high-quality insulating materials that can effectively store body temperature, prevent heat loss and provide excellent insulation for the wearer
Comfort: Mens thermal underwear is close-fitting clothing, has good skin-friendliness, is comfortable to wear, does not cause a sense of restraint, and is suitable for daily wear.
Good breathability: Mens thermals has good breathability, can absorb sweat from the skin and quickly discharge it, keeping the body dry and comfortable.
Elasticity: Appropriate elasticity helps men's thermal underwear fit the body curve, provide better comfort and support, and avoid looseness or restraint. High elasticity makes the wearer more flexible during exercise without restricting the natural movement of the body.
Versatility: Men's thermal underwear can be used as a base layer and paired with a coat to adapt to different climates and various activity needs. These characteristics make thermal men not only suitable for cold weather, but also for various outdoor activities and daily wear.

We scanned 1286 products

We reviewed these offers relevant to the Thermal Base Layer Men within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Mountain Warehouse, Canterbury, MOBIUSPHY, Under Armour, CL convallaria, Helly Hansen, romision, BENNIES, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Thermal Base Layer Men in the market, we considered we took a deep dive into 6431 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Mountain Warehouse Merino Mens Long Sleeve Thermal Baselayer Top - Lightweight Jumper, Antibacterial & Quick Drying Sweatshirt - for Travel & Outdoors Black M. We love many things about this product by Mountain Warehouse. What sets it apart from the competition is Keeps you fresh and odour-free, Wicks moisture, dries quickly, Light, comfortable and packable.
The best value product for most shoppers and where user satisfaction is continuously the highest is Mountain Warehouse Mens Merino Thermal Base Layer Trousers - Lightweight Mens Pants, Antibacterial, Breathable Bottoms - for Camping in Black L by Mountain Warehouse based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Thermal Base Layer Men and the best cost-to-value ratio is Helly Hansen Mens Lifa Stripe HH Crew Base Layer Top, L, Blackat Helly Hansen with a 35% discount.
Our list of the best Thermal Base Layer Men is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.