Prevents premature wear of prosthetic sleeves 100% Nylon Sleeve Saver  Reduces friction and skin irritation over your kneecap Saves your prosthetic sleeve from sharp socket trimelines and premature wear Black color One universal size Sold individually in a polybag Size Socket Circumference (in) Regular 13-18 Measure the circumference around the knee cap with your prosthesis on your residual limb. Amputee Essentials Sleeve Saver is intended to prevent premature failure of B/K (below-the-knee) prosthetic sleeves. Many BK prosthetic sockets are lightweight and thin with socket trimeline edges that can prematurely wear out a prosthetic sleeve. The new Amputee Essentials Sleeve Saver increases the longevity of your prosthetic sleeve by creating a slick barrier between the socket and sleeve. The Sleeve Saver is a simple double layer of nylon that is worn underneath your suspension sleeve and designed as a sleeve protector. When the Sleeve Saver is worn, the inner surface of the prosthetic sleeve is protected from abrasive socket edges. Materials 100%  Nylon Care Instructions Machine wash and tumble dry your Amputee Essentials Sleeve Saver gaitor. No Bleach.