This is the seat children pick as often as parents. Kids love cool perks like the hide-away cup holders and the "big kid" design features, especially the height-adjustable head support and padded, height-adjustable armrests. Parents love that it helps keep their children safe. It has EPS, energy absorbing foam, and open loop belt guides to help ensure proper seat belt positioning. And when needed, it easily converts to backless booster, giving you years of use. Features: Helps safely transport your "big kid" from 30-100 lbs Top rated by leading consumer magazines and publications Rigorously crash tested to meet or exceed U.S. safety standards Designed with the style and comfort features that kids love Easily converts to backless booster for years of use EPS, energy absorbing foam for effective impact energy management Fully-adjustable headrest keeps your growing child secure Open-loop belt guides help you correctly position your vehicle's seat belt Padded, height-adjustable armrests and hide-away cup holders keep kids smiling Specifications: Weight: 9 lbs Dimensions: 26.5H x 16.5W x 15D" Care and Maintenance: Machine-washable seat cushion Recommended Use: Highback Mode: For children 3-10 years old, from 30-100 lbs and 38"-57" tall Backless Mode: For children 4-10 years old, from 40-100 lbs and 40"-57" tall As recommended by the American Academy of Pediatrics, children 4 feet 9 inches tall or under should ride in a belt-positioning booster seat.