M12™ Heated Hoodie powered by an M12™ battery with carbon fibre heating elements creates and distributes heat to chest and back Superior run time, up to 11 hours of heat on a single battery charge of an M12™ REDLITHIUM™ 3.0 Ah battery pack (not included) Rugged heated hoodie made from durable cotton (53%) exterior with durable reinforced utility pockets and polyester fleece (47%) lining to withstand tough outdoor conditions Optimised hidden battery pocket to place M12™ battery in front or rear for increased comfort In autumn and spring the hoodie can be worn as a rugged outer layer. In winter, it is best as a base layer that allows to shed bulky undergarments while generating and holding heat close to the body Multiple heating zones - 3 sewn in carbon fibre heating zones distribute.