The Original Hot Hands Warmers Provide Up To 18 Hours Of 130 140? F Warmth In A Soft 4"X 5" Pack. Air Activated And Environmentally Safe, These Warmers Are A Must For Any Outdoor Trip. Hot Hands Adhesive Body Warmer Lasts Up To 12 Hours, Is Disposable, And Has A 4 Year Shelf Life. For Counter Top Box Of 371811, 371820 Purchase In Multiples Of 40.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }