2 pairs of heel pads: The thick insert is reduced by about 1/2 size, fits wide shoes and prevents the heel from slipping out of the shoe. The thin insert is reduced by about 1/4 size, fits slightly wide shoes and prevents blisters on the heel. No soto tools needed: The heel pads have an adhesive backing that holds them in place. Remove the adhesive backing and place the pads on the inside heel of the shoe. It can be easily put on and taken off when you don't want to use it. Design update: Designed to fit the contour of the heel of the shoe. It is made of a soft sponge, which makes it very elastic, flexible and reusable. There are gel spots on the cushion, which prevent your feet from slipping out of your shoes Wide range of applications: Applicable to high-heeled shoes, leather shoes and many other shoes; suitable for new shoes and slightly larger shoes. Large heel cushion inserts for blister prevention in women.