Wishpets Adult 12" M Brown Monkey Slippers Medium is 12" long and are one size fits most; Youth Size 12-6 (12 will be looser), Women's Size 5-8-1/2 and Men's Size 5-7 (depending on your foot width - Size 5 will fit a wider foot but Size 8-1/2 will fit a narrow-medium width). These Monkey Slippers are 12" long and are one size fits most; These Wishpets comfy slippers are padded and are non skid.