Rectangular Bolsters are very efficient at keeping the hips and legs positioned properly in the wheelchair. They inhibit sideways sitting by blocking the lateral movement (sweeping) of the hips and legs. The bolsters may be secured by attaching Velcro, straps or anti-skid materials.
All bolsters are covered with a fluid-proof material and flap-zippered closed to prevent any body fluid contamination. The polyurethane used is a high resiliency type which is expected to maintain its properties for 8 to 10 years under everyday usage.