Soft silicone heel cup. The heel protector is made of soft elastic silicone gel, latex-free, and can be used safely on any type of skin. The heel sleeves are washable to ensure ready-to-use right out of the box, and can be used with talcum powder or other foot powders if needed. The heel cover is made of latex-free silicone gel, which is washable and reusable. Instructions: Just put them in and they will stay in place and prevent your shoes from slipping off the heel. In addition, it can protect and support the heel from pain, blisters and calluses. 1: Clean the feet and keep them dry. 2: It is recommended that you add some body powder to the heel cup. 3: Put the foot pad on the foot. 4: Adjust the position until you feel comfortable.The soft heel wrap can be stretched gently to fit most foot sizes and can be worn under or on top of socks and socks. In addition, the low-profile gel heel protector can be easily installed in most sports shoes, casual shoes, sandals and boots.