The Secure Softie Wig Liner Large by Jon Renau is made from Bamboo Viscose fabric that is exceptionally comfortable to wear under a wig all day long. Because this wig liner is so soft, it is ideal for sensitive scalps. What makes this wig liner different is the inclusion of 6 silicone strips inside the cap strategically placed for added security. The Secure Softie Wig Liner is also available in petite and average cap sizes.