AliMed® AliGel™ Select Positioning Set offers more comprehensive pressure redistribution and nerve protection than our Basic Set, with components that include perineal cutouts for unobstructed surgical access. Ideal for a variety of surgical procedures. 10-piece set.A. (1) Head Donut, Adult, 8"W x 1-3/4"H B. (1) Head Section Surface Overlay, 20"W x 9"L C. (2) Armboard Pads, 4-1/2"W x 24"L D. (2) Ulnar Forearm Protectors, 13"W x 18"L E. (1) Torso Section Surface Overlay with Cutout, 20"W x 39-1/2"L x 1/2"H F. (1) Foot Section Surface Overlay with Cutout, 20"W x 20"L x 1/2"H G. (2) Heel Cups, 3-1/4"W x 6"L x 1-3/4"HAliMed® AliGel™ Positioners remain an industry standard due to the pressure-relieving properties of a unique gel formula that mimics fatty tissue and moves with the patient to reduce shear and help prevent pressure injuries. Additionally, AliGel absorbs shock, stretches, and retains its shape better than less dense gel positioners. AliGel is made of 100% dry viscoelastic polymers and includes an 18-month warranty against manufacturing defects.