The WARMEST boot ever made! The bunny boot is well known to those who work in cold climates or in cold storage plants. We carry the black and the white boot, both of which are no longer made. We have limited sizes and quantities. The black boot is rated to -20 degrees. It has an air chamber between layers with an air valve to compensate for pressure.  There is even a felt liner built into the sole of the boot to isolate the cold from the ground. These boots have not been made for three or four years now and are no longer being manufactured. A very hard to find product.