Premium Material: Orthopedic adhesive felt made from white orthopedic grade rayon blend, soft and resistant to being compressed, provides superior support and cushioning for sensitive areas（Warm tip: To remove the backing that covers the adhesive, simply press to make the glue and felt more firmly and then tear off, this is because the felt fibers in order to be softer will be less tight, the glue is not so good to stick on it!