Give your big kid a boost. Loaded with comfort features for kids, the Graco Highback Booster Seat helps protect your growing child, from 30-110 lb. This 2-in-1 seat converts from a high-back to a backless booster as your big kid grows. Kids love cool perks like the hideaway cup holders and comfort features, especially the height-adjustable head support and padded, height-adjustable armrests. Parents love that it helps protect their child by raising them up to the proper height for the seat belt.