AliMed® AliGel™ Basic Positioning Set provides pressure redistribution and nerve protection for the most common high-risk areas. Convenient and versatile, this multipurpose set includes Head Donut, Armboard Pads, Ulnar Forearm Protector, Hip Pad, and Heel Cups for many common procedures. 8-piece set.A. (1) Head Donut, Adult, 8"W x 1-3/4"H B. (2) Armboard Pads, 4-1/2"W x 24"L C. (2) Ulnar Forearm Protectors, 13"W x 18"L D. (1) Hip Pad, 20"W x 20"L x 1/2"H E. (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.