Hothands Heated Insole Foot Warmers SPECIFICATIONS BRAND: HEATMAX CA PROP 65: YES DESCRIPTION HotHands Insole Foot Warmers are single use air activated heat packs that provide everyday warmth and are ideal for keeping your feet warm when the temperature gets cold. These warmers provide safe, natural heat, so you can enjoy the great outdoors during those harsh winter months. The insole foot warmers are ultra- thin and measure the full length of an insole to keep your entire foot warm. Features: Ultra thin Ready to use Air- activated Safe, natural heat Adhesive – It stays where you stick it! Odorless Each warmer provides up to 9 hours of heat