The Size 4 Soft- Touch Sitter with Mobile Wedge Kit from Special Tomato is adaptive Seating at its best specially developed for children aged 9-13 years old! The Special Tomato Soft-Touch Sitter Mobile Tilt Wedge Kit is now available in chocolate! The rich chocolate color of the seat is offset by a lilac or tan harness to add a punch of color to the wonderful seat. The Sitter with Mobile Tilt Wedge Kit offers children with mild to moderate physical involvement a mobile seating option. The Special Tomato Soft-Touch Sitter is combined with a wooden base made mobile with casters. Four casters are included, allowing your child to move from one area to another with ease and without compromising their posture and position.áWeight capacity: 50-110 lbs.