The Special Tomato Early Pelvic Positioner was designed to work specifically with the Special Tomato Height Right Chair. There are contours in the back and on the bottom of the Early Pelvic Positioner that make it fit snuggly and safely with the Height Right Chair. It is intended to help support the pelvis of young users who need minimal to moderate pelvic support to sit upright. The shape of the seating surface provides an anti-thrust seating surface to promote a neutral pelvic position. The high side walls provide posterior (back) and lateral support along the outside of the thighs. There is also a pommel to help keep the legs from crossing over each other.
For those children that need some trunk lateral support as well, try the Height Right Soft-Touch Back Cushion