Makryn Unisex Heel Grips: Thank you for choosing our Heel Grips. 1.Keep your heels from slipping out of your shoes 2.Helps prevent blisters caused by abrasion when the back of your shoes are too loose 3.Helps shoes fit better. 4.Made of soft and durable leather,comfortable soft padding and a strong self-adhesive grip. 5. Applicable for various shoes such as high-heels, leather shoes, flats, pumps, boots, etc. Direction: Easy to use Tear off the protective film Place the adhesive side towards shoes liner Press firmly on the sides, then you are good to go.