ComfortZone™ Gel Liners offer the highest level in quality, protection, and comfort. ComfortZone™ Gel Liners offer maximum protection with 3mm thick medical grade mineral oil gel. The Ultra Cushion Gel Liner is a two-layered prosthetic liner made with cotton, nylon, and Lycra® fabric and coated with Silipos® gel to cushion and protect the Below-Knee (Trans-Tibial) residual limb from friction, abrasion, and pressure. This product is washable and reusable. ComfortZone™ Gel Liners are also available in Single Socket and Double Socket styles.