This high back booster seat was specifically designed for children weighing between 30 and 80 pounds. It features adjustable backrest height; shoulder rest width. Seat bottom is horizontally adjustable for leg support the seat belt guide adjusts to optimally position seat belt. The booster also features armrests and lumbar support for added comfort. The sturdy aluminum frame allows for maximum energy absorption while bolster support offers optimum side impact protection. The seat also conveniently folds for storage.