Choose the Solution B i-Fix high-back booster car seat for a great combination of safety, comfort and ease of use, tested according to the UN 129/04 standard. From the beginning an ISOFIX System helps you install the car seat correctly and safely. No matter how fast your child grows, a 12-position adjustable headrest provides a continuous snug fit and can be raised with one hand. A Linear Side-impact Protection System reduces impact force in the event of a side collision, for extra peace of mind on the road.Product features R129/04 Safety Standards Meets the latest R129/04 safety standards, for maximum protection and peace of mind. Integrated ISOFIX Integrated ISOFIX makes installation quick, easy and secure. Ultra-Lightweight Ultra-lightweight design makes the seat easy to manoeuvre and move between vehicles. Gentle on Skin Soft, breathable fabrics are gentle on your child's delicate skin.