Whether it's cold or windy the Gerbing Heated Clothing Torrid heated jacket is the perfection option for you. The four-way stretch fabric breaks the wind while the four heat ranges work to balance your body's core temperature. Powered by a lithium-ion battery, the Gerbing Heated Clothing Torrid jacket will last you up to 8 hours depending on how hot you like it.; Made from four-way stretch fabrics Four heat ranges Up to 8 hour range Water resistant Breathable 7 Volt lithium-ion battery (included) Works great as a mid-layer or outerwear Gerbing Heated Clothing lifetime warranty