The Baby Einstein SuperSeat Touch of Tunes 3-in-1 Seat is an activity seat, supportive floor seat for snacking, and a booster seat designed for ages 6 months to 3 years, 33-pound max Activity seat: engages baby as they learn; detachable Cal the Caterpillar piano plays melodies and teaches numbers and colors in 4 languages; includes toy bar, dangling toys, bubble popper, and spinning gears Supportive floor seat: gives baby a secure place to sit or snack by rotating the 360-degree tray with 2 built-in compartments; detachable snack tray is BPA-free and dishwasher safe Toddler booster: attaches to most dining chairs for mealtime at the table; 3-point safety harness secures child in the seat; EVA foam insert removes to wipe clean Dimensions: 22.3 X 22.3 X 21.4 inches; Piano requires 3 AA batteries (not included) and wipes clean