Comfortable & Breathable: The sneaker heel pads are made of high quality hsinchu cloth, built-in sponge material. Soft and comfortable. The soft design is good for reducing the friction between shoes and feet, avoid foot pain and blisters because of a long walk. Say Goodbye to Foot Troubles: The heel protectors are designed for for people with painful feet or blisters. with a 180 non-sensitive comfort fit and an increased anti-abrasion area. Stick the insoles to the shoes to prevent rubbing or heel drops. The heel grips provides you with the most comfortable experience and easy to solve the shoe problem. Adjustable Shoe Size: the package includes 2 pairs of 5 mm thick heel cushion pads and 2 pairs of 10 mm thick heel cushion pads . You can choose the right thickness according to your shoe size. And the sneaker heel grips can be freely cut to suit the different heel heights and shapes. Easy to Use: The shoe insoles inserts comes with a self-adhesive back, the upgraded back for a better fit and a secure fit without hurting the shoe. Easy to secure it to the heel of the shoe by tearing off the shoe sticker and press firmly. Wide Compatibility: the shoe heel inserts are suitable for slightly larger shoes, these heel pads are suitable for canvas, running shoes, boots, trainers, sneakers, sports shoes, work shoes, leather shoes etc. Not recommended for shoes with a lot of fleece in the shoe, eg boots with wool.