Living / 16 June, 2026 / Christina Walter
Choosing the right booster seat is an important step in keeping older children safe and comfortable on every journey. Group 2/3 booster seats are designed to support growing children as they transition from full harness seats to using a standard seatbelt, helping to ensure proper positioning and protection as they get bigger.
In this guide, we’ve rounded up our top picks for the best booster seats for older children, focusing on safety, comfort, ease of use, and value for money. Whether you’re looking for a lightweight option for travel or a more robust seat for everyday use, there’s something here to suit a range of needs and budgets.
The Axkid Up™ is a highly advanced high back booster seat designed to support children from approximately 4 to 12 years (100–150cm / up to 50kg), offering a long-lasting solution that combines safety, comfort, and flexibility. At the heart of its design is a patented raisable seat, allowing the child to be elevated for optimal seat belt positioning and improved access to the car’s built-in safety systems, including side airbags and pretensioners.
Built with a solid steel frame and integrated support leg, it delivers enhanced stability and reassurance on every journey. The ProtecBase™ system is designed to reduce crash forces, while the adjustable headrest, removable side impact wings, and adaptable seating height ensure a tailored fit as your child grows.
Practical features such as QuickFold™ make installation and storage simple, while ISOFIX compatibility and seatbelt installation options provide flexibility for different vehicles. With ergonomic ErgoSupport™ design inspired by Swedish school furniture, it also prioritises posture and comfort on longer journeys. Combining innovation with everyday usability, the Axkid Up™ sets a new benchmark for forward-facing booster seat safety and design.
This high-back booster seat is designed to offer a safe, comfortable, and reassuring travel experience for both children and parents. Suitable for everyday journeys as well as longer trips, it meets the latest i-Size safety standards and combines thoughtful design with excellent protection.
Comfort is a key feature, with soft comfort foam, a spacious headrest, and an adjustable design that adapts as your child grows. The precise belt routing system helps ensure the vehicle’s seat belt sits correctly across the hips and shoulder, supporting a secure and comfortable fit on every journey.
For added peace of mind, the seat includes advanced side-impact protection to help safeguard your child in the event of a collision, while the simple installation process makes it convenient for parents to use. Combining modern safety features with practical comfort, this high-back booster seat is a reliable choice for families looking for long-lasting protection on the road.
The BeSafe Flex FIX² is a thoughtfully designed high-back booster seat that combines advanced safety features with everyday practicality. Building on the success of the award-winning iZi Flex FIX i-Size, it offers excellent protection through its innovative Dynamic Force Absorber™ headrest, SIP+ side-impact protection, and the new PAD+ system, which adds extra comfort and protection for the chin and chest. The intelligent lap and shoulder belt guides help ensure correct seat belt positioning, reducing the risk of misuse.
One of its standout features is its slim design, making it possible to fit up to three child seats across a row by removing the SIP brackets from the middle seat. Despite its compact profile, it provides ample space and comfort for growing children. The adjustable recline function supports comfortable naps while helping keep the child properly positioned and protected. Additional conveniences include an easy-adjust headrest, integrated carry handle, and a fully removable, washable cover. Overall, the Flex FIX² is a safe, comfortable, and highly practical choice for families.
The Energi i-Size R129 is a versatile 2-in-1 car seat designed to provide long-lasting safety and comfort from toddlerhood through to the pre-teen years. Suitable from 76cm to 150cm, it transitions seamlessly from a harness booster for younger children to a highback booster for older kids, offering excellent value and extended usability. Installation is straightforward thanks to the one-click, colour-coded ISOFIX connectors and top tether system, helping ensure the seat remains securely positioned throughout every journey.
Safety is a key strength of the Energi i-Size R129. It meets the latest i-Size and R129 safety standards and has undergone enhanced side-impact testing for greater peace of mind. The integrated Safety Surround™ Side Impact Protection system provides additional shielding around the head and body, helping protect children in the event of a collision. As your child grows, the seat adapts to their changing needs while maintaining comfort and support. Combining ease of use, strong safety credentials, and long-term practicality, the Energi i-Size R129 is an excellent choice for growing families.
The Graco Junior Maxi Highback Booster is a practical and affordable car seat designed to support children from approximately 4 to 12 years of age. Suitable for children weighing 15–36kg and measuring 100–135cm, it uses the vehicle’s 3-point seat belt for installation, making it compatible with a wide range of cars without the need for ISOFIX connectors. Its lightweight design and simple setup make it a convenient option for families who regularly move seats between vehicles.
Comfort is a key feature, with a padded seat, adjustable armrests, and two hideaway cup holders that help keep drinks and small items within easy reach during longer journeys. The six-position headrest can be adjusted with one hand, allowing the seat to grow alongside your child and maintain a secure fit as they get taller. Parents will also appreciate the removable, machine-washable cover, which makes cleaning quick and easy. Overall, the Graco Junior Maxi offers a comfortable, user-friendly, and cost-effective booster seat solution for everyday family travel.
The Radial i-Size Plus 360 Spin is a versatile all-stage car seat designed to grow with your child from birth up to 150cm, approximately 12 years old. Combining long-lasting usability with the latest i-Size (ECE R129) safety standards, it provides parents with reassurance that their child is travelling securely at every stage.
One of its standout features is the 360-degree rotating function, making it effortless to place your baby into the seat and take them out, while reducing awkward lifting and twisting. The seat also supports extended rear-facing travel up to 105cm, around four years old, which is recognised as one of the safest ways for young children to travel.
Comfort and protection are at the heart of the design, with a supportive memory foam headrest, infant insert, and advanced side-impact protection. The adjustable headrest allows the seat to adapt as your child grows, while the integrated ISOFIX base and support leg with visual indicators ensure a straightforward and secure installation. Practical, comfortable, and built to last, the Radial i-Size Plus 360 Spin is an excellent long-term investment for growing families.
The Britax Römer Adventure Plus is a practical and comfortable highback booster seat designed to keep growing children safe on every journey. Suitable for children aged approximately 4 to 12 years, it meets the latest i-Size safety standards and is installed using the vehicle’s 3-point seat belt, making it an excellent option for cars without ISOFIX anchor points or for families who regularly move seats between vehicles.
Designed with everyday convenience in mind, the Adventure Plus features a slim profile that allows up to three seats to fit across the back of many cars. Its ergonomic, adjustable headrest and padded fabric covers provide lasting comfort as your child grows, while the adaptable backrest ensures a secure and comfortable fit within different vehicles.
Safety remains a key focus, with head-to-hip protection during side impacts and upper and lower belt guides that help position the seat belt correctly. Parents will also appreciate the removable, machine-washable cover, making it easy to keep the seat clean. Combining practicality, comfort, and reliable protection, the Britax Römer Adventure Plus is a fantastic choice for everyday family travel.
The Joie Signature i-Traver Group 1/2/3 Car Seat is a premium, long-lasting booster seat designed to grow with your child from around 3.5 to 12 years of age. Built to meet the latest i-Size R129 safety standards, it combines advanced protection features with everyday comfort and practicality, making it a reliable choice for family travel.
Safety is at the forefront of its design, with Guard Surround Safety™ side impact protection panels and a Tri-Protect™ headrest offering multi-layer protection for the head and body. The addition of Intelli-Fit™ memory foam provides enhanced comfort and support, particularly on longer journeys.
Designed to adapt as your child grows, the seat features a 10-position adjustable headrest and AutoAdjust™ seat depth with three settings, ensuring a tailored fit over time. Two recline positions and padded armrests add extra comfort, while soft knitted fabrics create a cosy seating experience.
Installation is simple and secure thanks to ISOFIX connectors and clear belt guides, with the option to use a vehicle seat belt if needed. Lightweight and easy to move between cars, the Joie Signature i-Traver offers a practical, comfortable, and safety-focused solution for everyday journeys.
The Cybex Solution X i-Fix Car Seat is a reliable and long-lasting highback booster designed to support children from approximately 3 to 12 years of age. Built to meet the latest R129 safety standards, it offers a strong balance of safety, comfort, and practicality for everyday family travel.
One of its standout features is the patented reclining headrest, which helps keep a child’s head within the protected safety zone while sleeping, offering added reassurance on longer journeys. The integrated Linear Side-impact Protection system enhances safety in the event of a collision, while the adjustable 11-position headrest ensures the seat adapts easily as your child grows.
Installation is simple and secure thanks to the ISOFIX connectors, which provide a stable fit and can be folded away when not in use. Designed with comfort in mind, the seat offers a spacious seating area, ergonomic support, and an adjustable backrest for a better fit in different vehicles.
Practical features such as removable, machine-washable covers make it easy to keep clean, while its lightweight design makes it convenient to move between cars. The Cybex Solution X i-Fix is a dependable, everyday booster seat built for safety and comfort over many years.
The Cosatto Zoomi 3 i-Size Car Seat is a versatile, long-lasting car seat designed to grow with your child from around 15 months up to approximately 12 years. Suitable for children measuring 76cm to 150cm, it offers a practical all-in-one solution that adapts through multiple stages of childhood while maintaining a strong focus on safety and comfort.
Built to meet the R129/03 i-Size safety standard and tested to rigorous crash testing levels, the Zoomi 3 provides reassuring protection on every journey. ISOFIX and top tether installation ensure a secure fit, while the patented 5 Point Plus Anti-Escape System helps keep children safely positioned in the seat. Deep side wings, impact-absorbing memory foam, and a padded headrest offer additional protection and support for the head, neck, and body.
Designed with growing families in mind, the seat features a 10-position adjustable headrest, adjustable harness, and a convertible design that transitions into a high-back booster as your child grows. Soft padded fabrics, armrests, and a removable seat liner ensure comfort on longer trips, while machine-washable covers and eco-friendly materials made from recycled bottles add everyday practicality.
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