The Evenflo Big Kid Sport Booster Car Seat gets your child excited about sitting in a booster seat! With 6 height positions, the back adjusts as your child grows, keeping the side and head support in the proper position. It also transitions into a no-back booster. Your child will love the comfortable padding around the head and body. The dual cup holders will keep drinks and snacks close. 2 Seats In 1 — removable back for easy transition to a no-back booster Easy one-hand, 6-position height adjustment to accommodate growing children longer 2 cup holders for drinks Machine-washable pad keeps seat looking clean Side Impact Tested: meets or exceeds all applicable Federal Safety Standards and Evenflo's Side Impact Test Standard Designed and tested for structural integrity at energy levels; approximately 2X the federal crash test standard Energy absorbing foam liner provides added safety and comfort For use as High Back booster (with backrest) Weight: 40-100 lbs Height: 44-57 inches Age: Child is at least 4 years old and child's ears are below top of child restraint headrest For use as No Back booster (with backrest) Weight: 40-100 lbs Height: 44-57 inches Age: Child is at least 4 years old