10 Best Child Car Seats 4 Years To 12 Years Light Weight in The UK

Last updated on 04/08/2025

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Maxi-Cosi Nomad Plus, Foldable Car Seat, 15 Months – 4 Years, 76 - 105cm , Portable Travel Car Seat, Ultra-Compact & Lightweight, Side Impact Protection, Fits any Car, Travel Bag, Authentic Black

13% OffFree Shipping

Why We Love It

Ultra-compact and lightweight design.
Quick universal installation feature.
Washable fabric for cleanliness.

Main Highlights

GROUP 1 CAR SEAT: this foldable toddler car seat is suitable from 15 months up to approx. 4 years (9–18kg) and is quick to install and easy to carry, so your child travels safely in comfort
EASY TO TRAVEL EVERYWHERE: the Nomad Plus is built for travelling as it's super easy to fold, has an integrated handle and comes with a water repellent travel bag
ULTRA-COMPACT AND LIGHTWEIGHT: the child car seat is ultra-compact and lightweight (4,26 kg), which makes it super easy to carry so your child can travel safely in comfort, everywhere you go
QUICK UNIVERSAL INSTALLATION: Nomad Plus fits any car with its belt installation and takes less than 30 seconds to install thanks to the belt routine ensuring correct installation of the car seat
SIDE IMPACT PROTECTION: with the seat's reinforced Side Impact Protection, you can relax knowing that your child is fully protected and safe when you bring your trusted child car seat with you
SOFT FABRICS AND COMFORTABLE PADDING: nestled in its soft fabrics and extra-comfy padded seat, your little one will always be snug and comfortable travelling from one adventure to the next
EASY HARNESS & HEADREST ADJUSTMENT: thanks to the easy adjustment of the safety harness and headrest height, the Nomad Plus provides extra safety and comfort over the years as your child grows
5-POINT SAFETY HARNESS: the Nomad Plus has a 5-point safety harness with anti-slip shoulder pads, keeping your growing child safe and stable at all times (suitable up to 4 years)
WASHABLE FABRICS: the car seat's easy-to-remove fabrics are machine washable at 30 degrees, allowing you to keep the car booster seat clean during all those family travels
INCLUDED ACCESSORIES: the integrated water repellent travel bag makes travelling easy – even when you have your hands full, you can pack the Nomad Plus away and throw it over your shoulder

BubbleBum Booster Seat, Inflatable Car Seat, Car Booster Seats for 4-12 Years Boy Girls Child Kids, Backless Portable Narrow Slim Foldable Lightweight Safe for Travel & Daily Use - Twin Black

Why We Love It

Innovative inflatable booster car seat.
Convenient for travel usage.
Ideal for kids aged 4-11.

Main Highlights

The Ultimate Travel Car Seat x 2 - Unlock the convenience of the world’s first backless inflatable booster seat. BubbleBum is the only inflatable booster seat with a patented system to guarantee stability and comfort on every journey.
Safety You Can Count On - Bubble Bum exceeds all US federal car safety standards & UK/European regulations (FMVSS213 & R44/04). Your new car booster seat comes with a seat belt positioning clip for optimal seat belt fit and comfort. Ideal booster seat for car 40-100 lbs children.
Take Anywhere Travel Booster Seat - The BubbleBum inflatable car seat is perfect for car rentals, taxis, vacations, and carpooling. Take your new backless booster seat on all your adventures. Perfect for kids 4 - 11yrs.
Fits With A Car Load Of Kids - Narrow & compact BubbleBum is perfect for the middle seat, including small cars. Our compact booster seat fits between 2 full-size car seats, allowing 3 kids across the back of almost any car.
Global Award Winner - In 2021 Bubble Bum won a ‘Mom's Best Award’ and is the recipient of a ‘Parent Tested Parent Approved’ award, plus dozens more. Ask our 1 million+ happy customers how much they trust the BubbleBum name. Your booster comes with a lifetime guarantee.

Feakaou 360 Car Seat with ISOFIX - for Newborn to 12 Years Children, i-Size (ECE R129/E4) Rotating Swivel Baby Car Seat,Group 0+1/2/3 (40-150cm),Rear Facing for Longer from Birth to 4 Years.Black.

25% OffFree Shipping

Why We Love It

Easy one-handed operation.
Grows with your child.
Enhanced safety features included.

Main Highlights

360 Spin Car Seat with One Hand - One hand can hold a baby, and the other hand can easily rotate the baby car seat. The 90 side gear is convenient for carrying the baby on and off the car seat.
Growth Type Baby Car Seat - From birth to 12 years old, with a length of 40-105cm (0-4 years old) suitable for rear facing. The ultra long reverse installation provides better protection for the baby's neck. It can be installed forward or backward from 76-105cm, giving parents more choices. 100-150cm (4-12 years old) forward installation, this high back child car seat can provide additional side protection for children compared to boosters.
Feakaou Car Seat Has Passed i-Size(ECE R129) Certification - Compared to the old ECE R44, the product is safer because Isize products require side impact testing, while the old standard R44 does not have side impact requirements.
Easy and Simple Installation, True 360° Rotation - - The seat can be easily installed with Isofix and support legs, and can rotate 360 degrees freely after installation. However, the Isofix+TT fixed safety seat cannot rotate 360 degrees after installation。
Comfortable Reverse Large Reclining Angle - This is a safety seat that is very suitable for newborns. The reverse seating can achieve a large reclining angle of 165 degrees with the support of the inner cushion, and there are 5 adjustable angles for both forward and reverse directions. When the baby grows up, the headrest can be raised with 12 levels of height adjustment, suitable for children of different heights.

Maxi-Cosi Tanza i-Size, High Back Booster Seat, 3.5–12 years, 100–150cm, Compact Foldable Car Seat, 10 Headrest Positions, G-CELL Side Impact Protection, Padded & Elevated Kids Car Seat, Full Black

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Why We Love It

Folds for easy storage.
Excellent side impact protection.
Eco-friendly recycled materials.

Main Highlights

GROUP 2/3 CAR SEAT: the multi-age forward-facing car seat effortlessly combines comfort, safety, and convenience on the go and throughout childhood from 100–150cm (approx. 15–36kg)
I-SIZE SAFETY: the ISOFIX car seat is designed according to the highest EU safety standards (i-size ECE R129), while the secure ISOFIX attachments mean you can have confidence through years of use
FOLDABLE CAR SEAT: the portable travel car seat (5.32kg) offers an easy, compact folding design (59.5cm x 28cm x 45cm) that allows you to take it with you, move it from car to car or store it away
G-CELL SIDE IMPACT PROTECTION: this integrated safety system provides expert protection from side impact as it spreads the forces away from your child reducing injury to the head, neck and shoulders
10 HEADREST POSITIONS: the Tanza i-Size car seat offers 10 headrest positions, providing your toddler with extra comfort as it can be adjusted in height as your child grows
TRAVEL IN COMFORT: your child can enjoy a comfortable and secure ride throughout their formative years thanks to the padded seat and an elevated seating position for better views
ECO-FRIENDLY PRODUCTION: Eco Care fabrics are made of 20 recycled plastic bottles and without the use of hazardous chemicals, meaning that your child’s skin is not exposed to any potential risks
100% RECYCLED FABRICS: the sustainable car seat cover is designed with Eco Care, which means the cover consists of 100% recycled fabrics - it can easily be removed and is machine washable

My Babiie MBCS80 Foldable Toddler to Booster R129 Child Car Seat - ISOFIX with Top Tether, Harness, 76-150cm (Approx. 9-36kg, 15 Months - 12 Years), i-Size, Group 1/2/3, Forward Facing - Black

Why We Love It

Grows with your child’s needs.
Compact design for easy travel.
Hassle-free installation for safety.

Main Highlights

TODDLER & CHILD CAR SEAT: The MBCS80 grows with your child from 76–150cm (from appoximately 9-36kg, 15 months to 12 years, Group 1/2/3), transforming from a secure harness seat to a high-back booster. With adjustable headrest and no-rethread harness, it ensures comfort, safety, and convenience at every stage. i-Size certified and forward facing kids car seat.
FOLD AND GO: The Fold & Go feature allows the booster seat to fold into a compact, portable size for easy carrying. Perfect for travel or storage, it ensures hassle-free convenience while maintaining reliable safety and comfort for your growing child.
HASSLE-FREE INSTALLATION: With a double-fix installation system using ISOFIX and a Top Tether strap, this car seat offers secure, stable attachment to your vehicle.
SAFETY FIRST: The MBCS80 is designed to meet the latest EU R129 safety certification standards. A reinforced shell and additional side impact testing give you peace of mind during every journey.
COMFORT FOR YOUR LITTLE VIP: The 5-point harness system, designed with soft padded covers, keeps your little one both secure and comfortable by protecting the body’s strongest points, ensuring a snug, safe fit throughout every journey from toddler to big kid. An adjustable headrest and extra padding ensure your child's comfort on every journey.
ALSO FEATURES: Simple to remove hand washable cover, breathable fabrics and wide, soft seat, and easy harness storage when switching to booster mode.

Kinderkraft JUNIORFIX2 Car Seat for 4-12 Years, I-Size 100-150 cm, Group 2/3, Toddler car seat with Isofix, Adjustable Headrest, Reinforced Side protections, Wide and Comfortable seat, Black

8% OffFree Shipping

Why We Love It

Extended safety features included.
Easy one-hand adjustment.
Comfortable seat for children.

Main Highlights

✅ FOR CHILDREN FROM 3,5 TO 12 YEARS: a baby car seat from 100-150 cm height (15-36 kg). It is fitted front-way facing using the ISOFIX base or optionally with a car seat belt. It was tested in more strict conditions than required by the standard and obtained excellent results.
✅ I-SIZE: certification based on the most up-to-date standards makes the travel car seat safe and compliant with the newest standards. Thanks to that, you will be able to focus on driving the car without worrying about your child during a car ride.
✅ SAFE: the baby seat has dedicated safety systems (SPS, H-GUARD): reinforced side protection that protects the child's shoulders and hips, also absorbing the energy generated during impact. The one-hand adjustment allows you to set it on one of 10 levels.
✅ EASY INSTALLATION: thanks to the ISOFIX base connectors and the correct installation indicators, you can fix the toddler car seat in a vehicle without a problem. The indicator will light up green once you correctly fix the baby seat, eliminating the risk of incorrectly fitting the child car seat.
✅ COMFORTABLE: this kids car seat has a wide and soft seat - the child will feel comfortable during both short car rides and longer journeys. It has profiled backrest, thanks to which it's comfortable for the little passenger.

Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey

Why We Love It

Adjusts with your child's growth.
Promises safety with 5-point harness.
Easy installation and lightweight design.

Main Highlights

GROWS WITH YOUR CHILD: The Logan car seat features an adjustable headrest and toddler insert cushions keeping all children no matter their size protected and comfortable.
5 POINT HARNESS: The child seat comes complete with a 5 point harness suitable for toddlers up to 18kg. This can then be hidden transforming the seat into a high backed booster.
FITTED IN MINUTES: The Logan can be fitted into most makes and models of car using the vehicle's seat belt.
REMOVABLE & WASHABLE COVERS: Accidents will happen that's why the Logan's covers can be easily removed and washed at 30°C.
ADDED COMFORT: Armrest, a large seating area and extra deep padding as well as insert cushions means the Logan is super comfortable for children no matter their size.
LIGHWEIGHT DESIGN: The Cozy N Safe Logan child car seat is a perfect addition for families who are always on the go. The lightweight design and easy fitting method allows you to swap the child seat between cars easily.

Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnight

36% OffFree Shipping

Why We Love It

Transitions for extended use.
Enhanced side impact protection.
Easily adjustable harness system.

Main Highlights

2-in-1 car seat - get more longevity out of this car seat thanks to the 2 forward-facing modes. From 76 to 105cm (15 months to approx. 4 years), use Eldura R129 as a harness booster. When your child reaches 100cm (approx. 3.5 years), you can transition to highback booster mode until your big kid reaches 150cm (approx. 12 years).
R129 safety - this harness booster meets the EU’s latest and greatest R129 standards. This means Eldura R129 has undergone more side impact testing to ensure your child is safe on every adventure.
Safety Surround Side Impact Protection - wraps around your child and provides enhanced head and body protection
No-rethread harness - as your child grows, easily adjust the harness and headrest together with just one hand and in one smooth motion.

Kinderkraft Car Seat Comfort UP, I-Size Booster Child Seat, with 5 Point Harness, Adjustable Headrest, for Toddlers, Infant, Group 1/2/3, 9-36 Kg, Up to 12 Years, Green

18% OffFree Shipping

Why We Love It

Ideal for multiple age ranges.
Incorporates an internal safety harness.
Offers eleven headrest adjustments.

Main Highlights

FUNCTIONAL: The car seat is suitable for children from 76 cm to 150 cm tall (approximately 15 months to 12 years or 9-36 kg); It is compliant with the latest R129 i-Size standard, it has successfully passed crash tests
SAFE: Easy installation with a three-point car seat belt, equipped with guides that are comfortable to use; The car seat is equipped with the internal five-point safety harness with soft pads and a crotch protector
COMFORTABLE: There are 11 headrest adjustment positions, and thanks to the EASY GROW SYSTEM, it offers simultaneous adjustment of the headrest and the internal safety harness; It has a wide, soft seat covered with breathable material
PRACTICAL: The car seat features special elastic bands to hold the safety harness, making it easier to place the child in it; And when you start to fasten your little one with the car seat belt; you can tuck away the internal safety harness without having to remove it from the car seat
MODULAR INSERT: The car seat is equipped with a soft and comfortable insert for younger children, which is modular and you can easily adjust it to your little one; You can use the insert for a child up to 87 cm tall (the part under the buttocks) or up to 105 cm (headrest)

My Babiie MBCS50 Toddler to Booster R129 Child Car Seat - 5-Point Harness, 76-150cm (Approx. 9-36kg, 15 Months - 12 Years), i-Size, Group 1/2/3, Adjustable, Forward Facing - Black

Why We Love It

Grows with your child seamlessly.
Hassle-free installation saves time.
Safety certified for peace of mind.

Main Highlights

TODDLER & CHILD CAR SEAT: The MBCS50 grows with your child from 76–150cm (from appoximately 9-36kg, 15 months to 12 years, Group 1/2/3), transforming from a secure harness seat to a high-back booster. With adjustable headrest and no-rethread harness, it ensures comfort, safety, and convenience at every stage. i-Size certified and forward facing kids car seat.
HASSLE-FREE INSTALLATION: Quickly & effortlessly installed, this car seat features a simple belted installation for a secure and stable fit
SAFETY FIRST: Featuring belted installation and a 5 point harness the MBCS50 is designed to meet the latest EU R129 safety certification standards. This car seat ensures your child is safe and secure on their travels.
COMFORT FOR YOUR LITTLE VIP: The 5-point harness system, designed with soft padded covers, keeps your little one both secure and comfortable by protecting the body’s strongest points, ensuring a snug, safe fit throughout every journey from toddler to big kid. An adjustable headrest and extra padding ensure your child's comfort on every journey.
ALSO FEATURES: Simple to remove hand washable cover, breathable fabrics and wide, soft seat, and easy harness storage when switching to booster mode.

8.7

Excellent

We scanned 1939 products

We reviewed these offers relevant to the Child Car Seats 4 Years To 12 Years Light Weight 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 Maxi-Cosi, BubbleBum, Feakaou, My Babiie, Kinderkraft, COZY N SAFE, Graco, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Child Car Seats 4 Years To 12 Years Light Weight in the market, we considered we took a deep dive into 9696 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 Maxi-Cosi Nomad Plus, Foldable Car Seat, 15 Months – 4 Years, 76 - 105cm , Portable Travel Car Seat, Ultra-Compact & Lightweight, Side Impact Protection, Fits any Car, Travel Bag, Authentic Black. We love many things about this product by Maxi-Cosi. What sets it apart from the competition is Ultra-compact and lightweight design, Quick universal installation feature, Washable fabric for cleanliness.
The best value product for most shoppers and where user satisfaction is continuously the highest is BubbleBum Booster Seat, Inflatable Car Seat, Car Booster Seats for 4-12 Years Boy Girls Child Kids, Backless Portable Narrow Slim Foldable Lightweight Safe for Travel & Daily Use - Twin Black by BubbleBum based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Child Car Seats 4 Years To 12 Years Light Weight and the best cost-to-value ratio is Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnightat Graco with a 36% discount.
Our list of the best Child Car Seats 4 Years To 12 Years Light Weight 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 Child Car Seats 4 Years To 12 Years Light Weight in The UK

Related Deals You Might Like for Child Car Seats 4 Years To 12 Years Light Weight

Bebeconfort Manga i-Safe, Car Booster Seat, 6–12 Years, 125–150cm, Child Booster Seat, Compact & Lightweight (<1kg), Easy Belt Installation, Fully Padded, Soft-Touch Fabrics, Full Black

Cozy N Safe Tambu Group 3 (22-36kg, 6-12 Years Old) Memory Foam, Lightweight Compact, Backless Booster Car Seat (Midnight Black)

Graco Booster Basic R129 Backless Booster Car Seat, Lightweight at only 1.4kg, Suitable from approx. 7 to 12 years (135-150cm), Black fashion

My Babiie MBCSB20 Child Booster Seat - ISOFIX, R129 i-Size 125-150cm (Group 3, 6 to 12 Years Approx.) Portable Kids Car Seat, Comfortable, Compact, Lightweight, Ideal for Travel - Black

My Babiie Booster Lite R129 Car Seat - Lightweight at 1kg, Approx. 6-12 Years (125-150cm, 22-36kg), i-Size Backless Child Car Seat, Group 3, Compact, Portable, Ideal for Travel - Pink & Black

Cozy N Safe Kea i-Size ECE R129 (22-36kg, 6-12 Years Old), Lightweight Compact, Backless Child Booster Car Seat Onyx

Cozy N Safe Neo 125-150cm i-Size Child Booster Seat, 22-36KG, Approx. 6-12 Years Old, Forward Facing, Removable Covers, Deep Foam Padded seat and armrests, 3-Point Seatbelt, ECE R129

Kidoola Adjustable Car Seat for Toddlers & Children - Safety Certified Booster Seat, Padded & Comfortable with 3 Adjustable Age Functions & Straps, Up to 12 Years - ECE R44/04 (Black)

Graco Logico L i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion

We scanned 1939 products

We concluded that: