Heel Pain Relief: Heel sleeve protectors provide support for the heels and ankles, reducing plantar fasciitis, heel tingling, tendonitis, pain and swelling. Anti-Slip Design: 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. 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. 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. Size: 1: S size (36-40 yards), 9.5 * 12 * 4 cm, 2: L size (41-45 yards) 9.5 * 13 * 4 cm Color: 1: blue, 2: black Package includes: 1 pair * heel set