APEX Wedge Gel-Foam Wheelchair CushionsThese cushions are recommended for patients who are at risk of pressure ulcers and who require posture support and or who are inclined to slide forward APEX design features dual density foam layers to provide a soft top entry layer for direct interface with a cooling gel pod and a higher density base layer for support and pressure distribution The gel pod close to the top of the cushion provides a cool interface between the patient and chair