HotHands H163760 Hand Warmer, Air Activated, Up to 10 hr, 15 min to 30 min, 3 1 2 in Lg, 40 PK G516178627 Connector Color Code Black Hydraulic Connector Color Code Black Hydraulic Hose Type Compatibility 2 Wire Braid Waterproof Includes Red Palm No Leather Glove Liner Type Cotton Foam Liner Includes Padded Palm No Insulated Yes Oil Resistant Yes Waterproof Yes Glove Materials Pigskin Touchscreen Compatible No Glove Back Color Tan Palm Style Unlined Glove Construction Cut and Sewn Glove Liner Material Cotton Foam Thumb Sweat Wipe No Water Resistant Yes Glove Hand Style Left and Right ANSI ISEA Abrasion Level Not Tested Brand and Series Tillman 42 Includes Pinch Point Protection No Includes Glide Patch No Rope Channel Reinforcement No Leather Palm Process Grain Cuff Color Yellow Leather Color Tan Includes Pull Strap No Glove Insulation Material Foam Reinforcement Coverage Reinforced Thumb Includes ID Panel No Leather Grade Premium Includes Double Palm No Glove Backing Material Tan Pigskin High Visibility No Hand Style Left and Right 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