【One Size Fits Most】These electric heated socks are elastic and fit most men and women. One size for Men US size 5-11.5 and Women US size 6.5-13. They don’t squeeze your feet in shoes because of the elasticity. Length of stocking 14.6-inch can cover the calf, widely matched, warm and stylish! Great winter gift ideas for parents, friends, lovers, and colleagues on Christmas, Valentine's Day, Birthday, New Year, and any other important Festival or Date.