| Thin with a unique rounded toe and adhesive backing, they are designed to function in the low oxygen environment of boots and shoes. Simply stick the Warmers to the outside of your sock, under or over your toes, and enjoy more than 6 hours of warmth. Warmers are widely used for portable, long-lasting heat therapy. 2 Warmers per package. All Grabber Warmers are designed for one-time, disposable use. |