AliMed® AliLite™ Cardiovascular Positioning Set is a variation of the supine set that includes the supine headrest in place of a donut or horseshoe. The ergonomically shaped headrest provides superior pressure redistribution and stabilizes the head and neck, making this set ideal for eye surgery and cardiac procedures. Five-piece set.A. (1) Supine Headrest, Adult B. (1) Surface Overlay, 20"W x 45"L C. (1) Dome Positioner, 6"W x 13-3/4"L x 3"H D. (2) Heel Pads, 4"W x 7"L x 3"HAliMed® AliLite™ Gel Positioners are up to 50% lighter than comparable gel-only products, combining all the pressure-relieving properties of gel with a lightweight inner foam core for easier handling. AliLite is impervious to fluids, naturally bacteriostatic, and features a stable, nonskid base. Precountoured to reduce pressure by redistributing weight over a larger surface area. AliLite gel is made of dry viscoelastic polymers and includes a 24-month warranty against manufacturing defects.