The Joie i-Trello FX R129 ISOFIX Booster Seat makes every journey safer and more comfortable for growing children. Buy online at Halfords today. This forward-facing high back booster seat is R129 certified and features side impact protection, a 10-position adjustable headrest, and a 5-point harness to keep your child secure. Built-in cup holders add practicality, while its ISOFIX compatibility ensures a stable fit. A reliable and comfortable car booster seat, perfect for every journey.