WillowWood's Alpha Silicone Liner uses a proprietary, platinum-cured, medical grade silicone designed for comfort and performance. Our unique blend of silicone, Vitamin E, and skin conditioners results in a pleasing surface that is non-greasy, non-tacky, and comfortable against the skin. The Alpha Silicone Liner uses Select fabric that controls pistoning without using a distal matrix. The Select fabric allows for circumferential stretch making it easy to don for numerous limb shapes. The flexible knee panel provides enhanced knee flexion and a broad range of knee motion. The Alpha Silicone Liner may be retrofit with Alpha Classic LIner and Alpha Hybrid Liners that have a progressive profile.