AliMed AliGel Chest Roll is ideal for a variety of positions and procedures. Place under the torso to allow for chest expansion or place under the feet to protect from possible nerve damage in prone. Also used in supine under knees and lateral on each side of the patient to keep them in position. Flat bottom provides stability and keeps the positioner in place. Not made with natural rubber latex. AliMed AliGel Positioners remain an industry standard due to the pressure-relieving properties of a unique gel forumla that mimics fatty tissue and moves with teh patient to reduce shear and help prevent pressure injuries. Additionally, AliGel absorbs shock, stretches, and retains its shape better than less dense gel positioners. AliFel is made of 100% dry viscoelastic polymers and includes an 18-month warranty against manufacturing defects