High Quality Materials: Made of microfiber materials,ensure breathable, comfort and cushioning High quality back glue: adopt three layers of mixed material double-sided glue, two layers of glue and one layer of stable fiber, super high viscosity and durability, no need to worry about damage shoes for a long time Solve Your Problems Easily:Instead of insoles and inserts,Improve Shoe Fit and Comfort; Forget your disposabl, attach it to your shoes instead of your feet,the pads protect and support your heels from pain,blisters,and rubbing Who and What Shoes Dose It Apply to: It is suitable for men,women,boys and girls; Suitable for almost all shoes, such as canvas,pump,high heel,flat shoes,dress shoes,work shoes,leather shoes,loafer shoes etc Worry-free products and services:f you have any problem in use, please contact us through Amazon email. Our customer service staff will certainly give you a satisfactory solution. Moreover, we do not want your used products to be returned to Amazon warehouse and sold to other customers Scope of supply: Filler * 4 pairs