Suggestion Size: Package: Pack of 2PCS Heel Pads Cushion. Women: US Shoe Sizes 6-14. Men: US Shoe Sizes 7-13. Flexible and Adjustable Design: Flexible and adjustable elastic band can be adjusted according to your needs to better maintain a comfortable position and better protection. Lightweight Design: The heel pads are made of breathable cotton pad, soft silicone, and skin-friendly fabric to absorb vibrations and reduce tension and stress at each step. Stay in Place: The new skin-friendly non-slip fabric, compared with the pure silicone heel cover, which is breathable and the friction between the moisture-wicking fabric and the shoes plays a non-slip effect and stays in place. Protecting Heel: Heel sleeve protectors provide support for the heel and ankles, reducing plantar fasciitis, heel tingling, tendonitis, pain and swelling.