Venture Heated Clothing Glove Liners is made out of a wind and water resistant poly/spandex. These gloves are infused with heating elements that run the length of the fingers, taking the chill off immediately. Contains BL-360 AA battery Heated comfort without sacrificing dexterity Allows you to choose between wearing it as it is or putting in a few fresh batteries to let the heating devices kick in. Great for use at home whenever you need to relieve those aching digits. Perfect For camping, dog walking, hiking, spectator sport skiing, fishing Snowboarding and many more