3-in-1 booster for children 30–100 lbs.: forward-facing harness booster (30–65 lbs., 34.4"–49"), high-back belt-positioning booster and backless booster (40–100 lbs., 43.4"–57") Slim seat design fits 3 across the back seat in most vehicles 1-hand-adjustable 7-position headrest and harness Easily converts to a backless booster car seat with 1 simple motion 2 removable, dishwasher-safe cup holders Machine-washable and dryer-safe seat pad Engineered and tested to meet or exceed federal safety standards Meets federal Side Impact standard