Stepup i-Size ISOFIX High-Back Booster – Blush Rose, 4-12 Years

A high-back booster with ISOFIX in blush rose, for children who have outgrown a harnessed seat — roughly 4 to 12 years.

How a booster works

A booster has no harness. It raises your child so the car's adult seat belt sits correctly — lap belt low across the hips, diagonal across the collarbone and chest. On an unboosted child that belt rides onto the soft abdomen and across the neck.

Why a high-back rather than a cushion

The back gives side impact protection for head and torso and guides the diagonal belt to the correct height. Backless cushions do neither, and UK law only approves them above 125cm and 22kg.

ISOFIX or belted?

ISOFIX clips to your car's anchor points so the seat stays put when empty. The belted version at £34.99 relies on the seat belt and moves between cars more easily.

Check before you buy

Your car needs ISOFIX anchor points. Check your vehicle handbook and which positions are i-Size approved.

Features

• Approved to UN R129 (i-Size)
• Adjustable headrest
• Side impact protection
• Belt guides for correct routing

Important safety information

Read the manual before fitting. Check belt routing every journey — diagonal across the collarbone never the neck, lap section low across the hips.

UK law requires a booster until 135cm or 12 years, whichever comes first.

Replace after any collision, however minor. Never use a second-hand seat with unknown history. Free fitting checks are available at many UK fire stations and retailers.