Warm feet - batteries not required! Developed in Alaska, the BootGlove is an inexpensive cover for the toe of your boots and is a very effective product for keeping your feet warm. The BootGlove has been tested to keep the shell of the ski boot as much as +50 degrees warmer. Made of Neoprene and Velcro, the BootGlove fits snugly over the boot with an adjustable strap for customizing the fit while leaving access to the top buckles. Without compromising the fit of the boot. The BootGlove acts as a wind blocking insulation layer that also stops water from leaking in - a problem found in many boots.