Footwarmer Box 40 - Last Up To 6 Hours/USA Made

All heat factory is usa made. Footwarmer: for use in restricted air such as a shoe or boot. Sized to fit heat factory footbeds, last up to 6 hours. Insoles: thin, air activated warmers that are shaped like insole. 6 hours of warmth. Mini: fit perfectly into your pockets, gloves and secret pocket clothing. Mini warmers last up to 8 hours each. Toe warmers: designed to stick to the bottom of your sock and warm your feet in the coldest of conditions, last up to 5 hours.