For skiers, hunters, fishermen, golfers, campers, or anyone who works or plays in the cold. Portable heat source that operates at an average temperature of 135 degrees Fahrenheit that last for seven hours or more. Easily fits in gloves and pockets. Air activated.

WARNING: This product is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.