Patented fastening system semi-permanently adheres Gekks to your shoes - you put Gekks in your shoe, not on your feet; Slip in and out barefoot, but get all day comfort and stench control; Ultra soft terry footbed; Thin toe section will not alter the way your shoes fit; 39% polyester, 38% nylon, 6% spandex, 13% pima cotton, 4% silver coated nylon