Suspends heels & places knee in a 5-10 degree flexion position Elevates legs to relax spine Distributes the weight of leg along calf to position foot drop block. Reduces the risk of pressure ulcers. Detachable straps that adjust for any leg length Low-Shear II cover reduces skin-damaging friction & wipes clean for easy care. Sold Each    #503185-18"  #503186-Large 22" Latex Free  UNSPSC#42241700