HotHands H163760 Hand Warmer, Air Activated, Up to 10 hr, 15 min to 30 min, 3 1 2 in Lg, 40 PK 98381A634 Total Capacity 8 qt Color Total Capacity 8 qt Color Silver Function Fluid Control Spout Yes Flow Capacity 256 oz Application Fluid Control Cover No Includes Removable Filter 50 Grit Mesh Screen Fits Universal Mouth Shape Round Finish Galvanized Fluid Capacity 256 fl oz 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 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