AliMed® AliGel™ Prone Head Pad keeps the head in a straight, neutral position during prone procedures. The patient's head and face are protected, and the endotracheal tubes can be accessed through the channels on either side as well as from the bottom of the head rest. Not made with natural rubber latex. Available in two sizes.Medium: 8-3/4"W x 7-3/4"L x 4-3/4"H • 4.35 lbs. • Large: 10-5/8"W x 9"L x 5-1/4"H • 7.6 lbs.AliMed® 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.