HotHands H163760 Hand Warmer, Air Activated, Up to 10 hr, 15 min to 30 min, 3 1 2 in Lg, 40 PK 98381A634 1% Product Type Body Filler 1% Product Type Body Filler and Repair Adhesive Maximum Operating Temperature 180 Degrees F Base Type Epoxy Number of Components Two Part System VOC Content Weight 1 g L Features Designed For Use As A Filler and An Adhesive Full Cure Time 4 hr Compatible Surface Material Plastic Working Time 8 min Package Quantity 1 Country of Origin United States Pressure Adjustment Range 25 to 75 psi Warmer Type Hand Warmer Activation Method Air Activated Heating Time Up to 10 hr Average Temperature 135 °F Number of Hand Warmers Included 40 Length 3 1 2 in Width 2 in Reusability Disposable For Use With Gloves Time to Reach Average Temperature 15 min to 30 min Country of Origin USA These hand warmers are worn inside gloves and mittens and give off heat that keep hands and fingers warm