Nylon Made in US Medical grade two way stretch nylon for positive blood flow and skin health on post-operative limbs Knit with real rubber core covered yarns, for maximum surgical weight durability and performance 14 inch length; Balanced compressive elasticity for patient comfort, reduced swelling, and healing Prevent control or reduce edema after amputation; can be used over wound dressing or with prosthetic Size by circumferences around calf or residual limb; Small (8-12"); Medium (12-16"); Large (16- 20")