10 Best Vacuum Insulated Flask in The UK

Last updated on 10/08/2025

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Thermos - Stainless King Midnight Blue Travel Flask (1.2L) Premium Leak Proof Insulated Tea & Coffee Flask, Hot & Cold Drinks, Built-in Cup, Twist-Pour Stopper, BPA-Free, Durable Steel Dishwasher Safe

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Why We Love It

Keeps temperatures perfectly retained.
Durable and practically designed.
Comfortable, sweat-proof handling.

Main Highlights

Thermos Vacuum Insulation: Unrivaled temperature retention for hours in our stainless steel water bottle. Your coffee stays piping hot and your iced tea refreshingly cold
Hard-as-Nails Construction: Crafted with durable stainless steel inside and out, this metal water bottle withstands drops, dings, and daily wear while keeping your drinks & food optimum
Comfort in Every Sip: Stay cool and dry with this innovative thermos travel mug for hot drinks. No more burned hands or condensation rings - just pure drinking pleasure, hot or cold
Built-in Serving Cup: Enjoy your favorite beverages anywhere with the insulated stainless steel cup. Share a toast or savour solo - convenience meets style in this coffee cup travel mug
Pour with Precision: The clever twist-and-pour stopper lets you serve without removing the lid. No spills, no fuss - just smooth pouring action for your coffee mug travel companion

iN Stainless Steel Water Bottle with Straw 12hr Vacuum Insulated Tumbler and Lid - BPA-Free, Quencher, Spill-Proof, Hot/Cold Drinks - Dishwasher Safe (Navy)

Why We Love It

Keeps drinks hot or cold.
BPA-free and safe materials.
Compact and portable design.

Main Highlights

Insulated Water Bottles with Double Wall Vacuum Insulation with 12-Hour Performance: Stay refreshed with this stainless steel water bottle with straw, featuring double-layer vacuum insulation that locks in temperature for up to 12 hours. Keeps your coffee hot for 6+ hrs or water cold for 12+ hrs perfect for shorter trips, workdays, or quick outings.
BPA-Free Stainless Steel Travel Mug with Air-Tight Seal: Made from premium, food-grade stainless steel, this tumbler is 100% BPA-free, lead-free, and phthalate-free. The air-tight seal ensures no leaks or spills, offering safe and reliable hydration wherever you go.
Spill-Resistant Lid with Straw and Air-Tight Design: Enjoy mess-free sipping with the spill-resistant lid and included straw, enhanced by an air-tight seal for maximum leak protection. Ideal for water, iced coffee, or smoothies during commutes, workouts, or travel.
Insulated Water Bottles with Compact 900ml Capacity for Perfect Portability: Unlike bulkier 1.2-liter water bottles, this 900ml quencher tumbler strikes the ideal balance, big enough to keep you hydrated, yet compact and lightweight for easy carrying. Fits effortlessly in bags and most cup holders, making it a practical choice.
Versatile Quencher Tumbler for Hot and Cold Drinks: This thermal coffee water bottle excels at maintaining hot for 6+hrs or cold drinks for 12+ hours, thanks to its vacuum-insulated design. Whether it’s tea, coffee, or ice-cold water, it’s your go-to companion for any occasion.
Easy to Clean & Dishwasher-Safe for Convenience: Keep it fresh with minimal effort. This dishwasher-safe tumbler features a wide mouth for handwashing or adding ice. The air-tight lid disassembles easily, ensuring thorough cleaning every time.
Stylish Gift Option for Men and Women on the Go: This 900ml insulated water bottle blends functionality with a sleek design, making it a standout gift for birthdays, holidays, or special moments. Perfect for coffee lovers, fitness fans, or anyone seeking a portable, high-quality tumbler.

Thermos - Icon Granite Black Travel Tumbler (470ml), Reusable Insulated Stainless Steel Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 7hr Hot/22hr Cold

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Why We Love It

Keeps drinks at perfect temperature.
Fits in standard cup holders.
Durable and stylish construction.

Main Highlights

Temperature Control - Keep your coffee steaming hot for 7 hours or iced drinks chilled for 22 hours, maintaining the ideal temperature from your first sip to the last drop
Commuter Friendly - Fits standard cup holders and features a non-slip base, while the leak-proof lid prevents spills during your morning rush or busy commute
Robust Construction - Crafted from commercial-grade 18/8 stainless steel, this durable travel companion resists dents, scratches, and stands up to daily use
Effortless Clean-Up - Dishwasher-safe design with BPA-free components ensures hassle-free maintenance, while the durable materials withstand repeated washing without staining or odours
Style Meets Function - Choose a colour to match your personality or outfit, while the sleek design and 470ml capacity deliver practical sophistication

3L/5L Pump Action Air Pot Flask with Vacuum Insulated, Safety Lock & Carry Handle for Drink, Tea & Coffee by Crystals® (3L Air Pot Flask)

Why We Love It

Keeps drinks hot or cold.
Easy pump action dispensing.
Safe and portable design.

Main Highlights

3L / 5L CAPACITY: The Contemporary style Airpot Flask has a huge 3L / 5L capacity allowing you to keep water, tea, coffee or other liquids hot or cold for up to 24 hours. Perfect for entertaining at home, the office, restaurants and hotels.
DOUBLE WALL WITH VACUUM INSULATED: Featuring a double walled construction Airpot Flask is proven to keep hot liquids hot and cool liquids cool for up to 24 hours, fantastic for functions, catering events, conferences and seminars.
PUMP ACTION DISPENSING SYSTEM WITH 360° SWIVEL BASE: The innovative 360° swivel base design allows users to dispense liquid from any direction. Drinks are easily dispensed with the push button lid.
CARRY HANDLE WITH SAFETY LOCK SYSTEM: Includes an open/close safety lock. When in the "close" position the safety lock will prevent liquid from being dispensed to avoid accidental spillages. Also includes a carry handle for easy and safe transportation. The sleek "brushed stainless steel body is cool to touch even when the liquid inside is hot.
HASSLE FREE EASY USAGE: The airpot/flask has a large pump action button on top of it to dispense the beverages with much ease and hassle free. Pump action function makes it easy and its ideal for all kind of age persons to pour the beverages as you don’t have to pick it up. The elegant stainless steel design is durable and long lasting and comes with a handy carry handle for carrying.

Milton Vacuum Flask for Hot Drink 500 ml (16 oz), Stainless Steel Double Walled Insulated Water Bottle for 24 Hour Hot and Cold Drinks, Leak Proof, BPA Free, Thermosteel Flip Lid

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Why We Love It

Keeps drinks hot or cold.
Single hand flip lid operation.
Durable and stylish stainless design.

Main Highlights

✅ 24-hour temperature retention - Milton Stainless Steel Bottle is designed with double-wall vacuum insulation and an inner copper coating. This unique design ensures that your beverages stay hot or cold for a full 24 hours, regardless of the ambient temperature. So, you can enjoy your favorite drinks at the perfect temperature all day long...
✅ Leak proof water bottle - This Metal Water Bottle has a leak-proof design that prevents any unwanted drips or messes. The best part about it is the flip lid that allows you to open and close the bottle with just one hand. No more twisting or unscrewing caps, just flip and sip! Additionally, the lid can be used as a cup, making it even more practical and convenient...
✅ Stainless steel water bottle - The Insulated Bottle of Milton Thermosteel Flip Lid Bottle is made of high-quality SS 304 stainless steel, durable, rust-resistant, and easy to clean. Providing a Vacuum-Insulated Water Bottle with a sleek and stylish finish that will keep up your modern style while keeping your drinks one sip away...
✅ Made for active lifestyles - Whether you need a Gym Bottle or one to take on your outdoor adventures, the Thermosteel Flip Lid Bottle fits almost any need to keep up with your hydration goals. Suitable for filling with hot or cold beverages, coffee, tea, juice, or water. Take it with you to the gym, office, school, or anywhere!!
✅ Caring tips - To keep your steel water bottle in good condition, clean it with mild detergent and use a brush to remove any leftovers inside. It's easy to clean and safe to put in the dishwasher. To prevent any odors, store it in an open area...
✅ Milton: Founded in 1972, Milton has become one of the most celebrated homeware brands across the globe, Milton aims to provide high-quality products that solve consumer problems by continuously innovating, setting new standards and doing outstanding work, Believes in moving forward, evolving and bringing the winds of change to every household with its product range...

HydroPal Vacuum Insulated Stainless Steel Water Bottle, 1200ml/1000ml/750ml- 2 Lids (Straw Lid and Spout Lid), 2 Straws Water Bottle for 12 Hours Hot & 24 Hours Cold Drinks, Great for Work, Travel

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Why We Love It

Stainless steel ensures healthy hydration.
Keeps drinks hot or cold.
Comes with two leakproof lids.

Main Highlights

❅18/8 Food Grade Stainless Steel: All our water bottles are made from high-grade, non-toxic, BPA free18/8 stainless steel that never rusts or imparts a metallic taste. The outside layer is anti-slip for easy grip.
❅Insulated Sports Water Bottle: Perfectly vacuum sealed with double wall insulation which makes the water bottle sweat-free! It keeps your drink COLD for up to 24 hours, and HOT for up to 12 hours. And the wide-mouth design is easy to clean and fill with ice cubes.
❅2 Lids: YES, HydroPal comes with TWO different 100% leakproof lids to fit your every need. The carabiner straw Lid allows you to enjoy spill-proof sipping without effort. A spout lid with a screw cap allows fast water flow when you feel the burn.
❅Ideal Gift Choice: Our line of insulated hydration solutions comes in 650ml to 1200ml sizes with a variety of colors. Whether your family and friends are into fitness, working, or traveling, they will all love your gift idea!
❅What You Get: 1 x HydroPal water bottle, 2 x lids, 2 x straws, 1 x straw brush, 1 x packing box.

Vacuum Insulated Flask 500ml/16.9oz Stainless Steel Thermo Bottle with Cup for Coffee Water Hot and Cold Drink Flasks.(Black,Single)

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Why We Love It

Keeps drinks hot and cold.
Durable and easy to clean.
Perfect for on-the-go.

Main Highlights

Keep Heat and Cold:Our double-layer vacuum insulated travel mug is made of excellent heat insulation material,Which can keep hot and cold liquids (Water,Coffee,Tea) at low temperature for 6 hours and keep warm for 6 hours.It is also made of BPA-free materials and can be safely.
Rugged And Durable:This stylish and sturdy coffee bottle is made of high-quality food-grade 18/8 stainless steel and will not break.Scratch-resistant and easy to clean,The travel mug is equipped with a sponge brush for daily cleaning.It can easily clean the entire inner surface of the bottle and can easily reach anywhere,Including hard-to-reach corners and bottoms,This is the best gift for family or friends.
Multi-function Lid:The high-quality coffee cup lid can double as an insulated service cup,The twisting and dumping function allows you to pour it without moving the stopper and put it in the bag without worrying about overflow or leakage,Thus bringing you the best Good experience.
Take It With: Our stainless steel water bottle is very suitable for daily use and can be taken with you,Such as hiking,Biking,Beach,Camping,Travel,School or company,Put the portable hot drink cup in the side pocket of your backpack or as a daily companion to help you stay healthy and hydrated!
Satisfactory Customer Service:If you are not satisfied with our products or have any quality problems,Please feel free to contact us and we will provide you with the corresponding solutions.

Thermos - Teal Direct Drink Flask (470ml) Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 10hr Hot/24hr Cold

20% OffFree Shipping

Why We Love It

Keeps temperature hot or cold.
Constructed with durable stainless steel.
Handy, compact, and easy transportation.

Main Highlights

Exceptional Temperature Control – Advanced Thermos vacuum insulation keeps beverages hot for up to 10 hours or cold for 24 hours, ensuring optimal hydration throughout your day.
Durable, Premium Construction – Made with high-quality stainless steel, this flask is built to remaining cool to the touch with hot drinks and condensation-free with cold drinks.
Designed for Active Lifestyles – Its sleek, compact design fits easily into most cup holders and gym bags, making it the ideal companion for work, travel, and workouts.
Leak-Proof & Convenient – The secure push-button lid with a locking catch prevents leaks, while allowing quick, one-handed access to your beverages on the go.
Practical Capacity – With a 470ml capacity, this flask offers the perfect balance of portability and hydration for extended use, whether commuting or during your fitness routine.

JUMKEET Double Walled Vacuum Cup Flask Thermo,Stainless Steel Insulated Water Bottle | Flask for Hot and Cold Drinks Cup Travel Coffee Mug, Sports Water Bottle (A-Pink)

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Why We Love It

Keeps drinks hot or cold.
Safe, toxin-free materials.
Convenient one-hand operation.

Main Highlights

♕ HIGH QUALITY & VACUUM INSULATED : Food grade 304 stainless steel on both inside and outside walls. Free of BPA materials, chemical toxins or metallic aftertaste transfer.
♕ LONG HEAT RESERVATION : Double-walled vacuum insulated stainless steel container insulates heat for up to 12 hours and isolates cold for about 12 hours.
♕ ONE-HAND OPERATION : With an innovative closure, this isolation cup allows one-handed operation by briefly releasing and pressing the side button. It is ideal for outings and office work.
♕ ENDLESS POSSIBILITIES : The stainless steel bottle is ideal for use at home, at work, at sports, in the car, on the beach and even during camping or hiking. Ideal for water, tea, coffee, carbonated drinks, wine and beer.
♕ EXCELLENT DESIGN: The leak-proof lock design is used to firmly lock the lid to avoid water leakage. Elegant curved cup design with ergonomic design. It is very easy to disassemble and clean.

Thermos Thermo Cafe S/S Flask - 181109, Silver, 0.5 Litre

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Why We Love It

Maintains temperature effectively.
Stainless steel durability.
Condensation-free exterior.

Main Highlights

Double wall vacuum insulation retains hot or cold temperatures
Durable stainless steel interior and exterior
Cool to the touch with hot liquids, sweat-proof with cold
Insulated stainless steel serving cup and not dishwasher safe

8.7

Excellent

We scanned 1278 products

We reviewed these offers relevant to the Vacuum Insulated Flask 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 Thermos, iN, Crystals, MILTON, HydroPal, GIOGD, Jumkeet, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Vacuum Insulated Flask in the market, we considered we took a deep dive into 6391 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 Thermos - Stainless King Midnight Blue Travel Flask (1.2L) Premium Leak Proof Insulated Tea & Coffee Flask, Hot & Cold Drinks, Built-in Cup, Twist-Pour Stopper, BPA-Free, Durable Steel Dishwasher Safe. We love many things about this product by Thermos. What sets it apart from the competition is Keeps temperatures perfectly retained, Durable and practically designed, Comfortable, sweat-proof handling.
The best value product for most shoppers and where user satisfaction is continuously the highest is iN Stainless Steel Water Bottle with Straw 12hr Vacuum Insulated Tumbler and Lid - BPA-Free, Quencher, Spill-Proof, Hot/Cold Drinks - Dishwasher Safe (Navy) by iN based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Vacuum Insulated Flask and the best cost-to-value ratio is Thermos - Teal Direct Drink Flask (470ml) Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 10hr Hot/24hr Coldat Thermos with a 20% discount.
Our list of the best Vacuum Insulated Flask 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.

10 Best Vacuum Insulated Flask in The UK

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We scanned 1278 products

We concluded that: