Suitable from 100 to 150cm (approx. 3.5 to 12 Years), the Joie i-Trillo High Back R129 Car Booster Seat in Shale is a front-facing booster seat with a lightweight, streamlined frame that easily installs using your vehicle's seat belt. Enjoy easy-going road adventures with the space-saving i-Trillo, with a 10-position headrest, deluxe cushioning, and enhanced side-impact protection and comfort.Lasting Comfort and Convenience The 10 position headrest grows with your child, and easily adjusts with one hand, while Guard Surround panels provide additional security for your little one's head, body and hips. The premium padded seat offers lasting comfort at every stage of development, with padded arm rests, machine-washable covers and two tuck-away cupholders, so kids can enjoy every step of the journey.