The item has been opened in the photo for shooting purposes, but the item being sold is unopened. A protector recommended by serious baseball players! "Crystal Gel," a special shock-absorbing material, absorbs impact on the heel, which is prone to damage from impact! How to use: (1) After checking the front and back, insert your toes into the front. (2) Wrap around the heel. (Be careful not to pull too hard.) *This product is for both left and right feet and can be used on either foot. *Please wear socks or other footwear after putting on this product on your bare foot.