About this item Heel Pain Killer - Designed for those who have a foot pain, blister or callus. Prevent shoes rubbing your feet, slipping out of shoes, hold heels in place and relieve plantar fasciitis pain. Easy to Use - these shoe heel stickers have self-adhesive backs; Peeling off the back cover, you can stick them on your shoes backs conveniently. Rational Design - The heel liners adopt hollow cylinder design to adjust the space automatically; They keep your shoes from slipping out and make them more comfortable when shoe size is bigger. Wide Application - These heel cushion pads fit for many shoes such as high-heels, leather shoes; They are applicable to new shoes and slightly bigger shoes, suitable for all people. Reusable - Foot Care Protector Grips are made of durable material and are easily washable with soap and warm water whenever the adhesiveness is lost which make them suitable for daily use.