Hi Guard Boot Cover, 1 Pack of 30 Underarm Support Crutches Leak resistant screw cap offers secure Style:Right Ear Leak resistant screw cap offers secure closure between uses when properly closed Good2Go Medium 9 x 12 * Plush multi ply cover design focuses moist heat right where you need it most * Joint specific or multi use shapes for a snug secure fit * Portability convenience and economy in a reusable unit that will last for years * Patented non allergenic fill does not leak smell decay or encourage fungus growth * Fill has a special porous surface to trap the maximum amount of atmospheric moisture * Wide elastic strap holds heat snugly in place while you continue regular activities * Mitt is filled with two soft gel packs that can be heated or frozen as needed to surround your hand with either hot or cold therapy Two 1 inch urethane foam traction strips Shoe and lower leg coverage