This wedge shaped air cushion allows a seated posture with a forward pelvic position. Great for increasing awareness and concentration. Children who crave movement find it very difficult to concentrate when sitting still as their need for movement is not being met. This cushion helps to satisfy this sensory need for movement thus allowing the child to focus and concentrate. It is 35cm x 35 cm in size. Suitable for older children and adults. A junior version is available for younger children.