HEEL BACK GEL- gel universal heels. Flexible heels to protect heels from abrasions and corns. Made of clear gel making them almost invisible. They prevent the foot from slipping inside the shoe. Recommended especially for shoes that are too loose and new, with too hard heels. Available in universal size. The package contains two insoles. They fit all types of footwear, are reusable and washable. Self-adhesive, paste on a dried and degreased surface!