The Assure highback booster is designed to help safely transport your "big kid" from 15kg to 36kg approx. 4 to 12 years. Assure features Safety Surround side impact technology, which gives your child the best head and body protection. The seat also has one-hand, adjustable headrest allowing parents to quickly and easily adjust the height of the headrest as your child grows. The Premium seat covers include additional padding for your kids comfort. Safely transport your big kid with Graco Assure Group 2,3 car seat.