Material: gel liners,velvet Size: one size fits all Color: black and beige Feature: soft ,strong elastic,adhesion good Function: Protect the heel from shoe abrasion. Helps shoes fit better. Relieve foot pressure and fatigue. Quantity: 2 pairs Notice: It won't work on shoes that are too tight, and you need a space between the shoe and the foot;also ,the inner wall of the shoes should not be long velvet, which is not suitable for sticking on the surfaceWhile it's a great heel pad, but please attention when you buy it, it won't work on shoes that are too tight, and you need a space between the shoe and the foot;also ,the inner wall of the shoes should not be long velvet, which is not suitable for sticking on the surface. SUITABLE FOR MOST SHOES-- leather shoes, high heels, canvas shoes, casual shoes, etc,unisex.If you have shoes that you like but will scratch your heels or slightly larger, you can try them. EASY TO USE AND REUSABLE--Heel grips shoes too big have a sticky backing that keeps them in place firmly. Simply remove the adhesive backing and place the pad on the inside heel of shoe. If the adhesive loses its tackiness just wash it with warm and soapy water, let it dry and you can stick it again. HIGH QUALITY--Made of soft and safe silica gel, strong elasticity and flexibility. The sweat absorbing and skin-friendly velvet outer can prevent your feet from contacting with silicone directly,gentle and comfortable. HEEL GUARD--Gel liners protect and support your heels from pain, blisters, callus. Heel pads provide an extra cushioning, same time side and back protectors pad soften chafing, holds heels in place and prevents rubbing and slide.