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. Heating Location: Perimeter of the hand Heating Panels: Hair thin, micro fiber alloy heating elements - No Coils Fabric used is stretchable poly-spandex Heating time is up to 1.5 to 6 Hours of heat per charge (estimated) Additional Features: durable grip design and Low Profile Heating temperature is up to 132 degrees Fahrenheit +/- 5 degrees at 32 Fahrenheit Temperature controller is built in into 602 battery pack maximum, high, medium and low settings