Axkid Up

The Axkid Up is Axkid's most advanced high-back booster: a forward-facing i-Size seat for children from 100–150 cm (around 4–12 years, up to 50 kg), with a patented raisable seat, a steel base and a built-in support leg. Footrest included – new for 2026.

Free fitting when you buy from us – book a one-hour appointment in store and we'll fit the seat in your car and show you how to use it.

Delivery: £21 to UK mainland and Northern Ireland, or collect free from Towcester, Rayleigh or our Belfast fitting day – with free fitting included.

Book your free fitting

Is your child ready for a booster?

As extended rear-facing (ERF) specialists, we recommend keeping your child rear-facing for as long as possible – ideally to 125 cm. Not sure if it's time to move up? Ask us and we'll help you decide.

Will it fit my car?

The Axkid Up fits with ISOFIX and its built-in support leg, or with the car's seat belt. It's narrow enough for three in a row and can go in the middle seat. Call or email us with your car make, model and year and we'll check it for you – or book a free fitting appointment.

Buy from the UK's oldest car seat specialist

• Free fitting on every seat bought from us (£25 fitting fee for seats bought elsewhere).
• 40 years' experience fitting car seats – we're extended rear-facing (ERF) specialists.
• One-hour fitting appointments in store at Towcester and Rayleigh (Essex), plus monthly appointments in Belfast.
• Expert advice before you buy – not sure if this is the right seat? Ask us and we'll talk you through the options.

At a glance

• Standard: i-Size (UN R129)
• Child height: 100–150 cm
• Child weight: up to 50 kg
• Age: approx. 4–12 years
• Direction: forward-facing high-back booster
• Installation: ISOFIX with built-in support leg, or the car's 3-point belt
• Seat weight: 9.5 kg
• Size in use: 43.5 cm wide × 83 cm high × 63.6 cm deep
• Folded: 25.4 cm high
• Included: Axkid Up footrest

Key features

• HeightControl™ raisable seat – lifts your child so the belt sits in the right place and they benefit from the car's own safety systems, like side airbags and belt pretensioners.
• ProTecBase™ – solid steel frame with built-in support leg; Axkid's internal tests show up to 25% lower crash forces than other boosters.
• SnapGuard™ – removable side impact wings for more comfort or more space in the car.
• QuickFold™ – folds flat for storage and travel, and gives a clear view of the ISOFIX connectors when fitting.
• ErgoSupport™ – lumbar support inspired by Swedish school furniture, for good posture on long journeys.
• Three in a row – fits alongside other seats or in the middle seat.