Rugged heated hoodie made from durable cotton (53%) exterior with durable reinforced utility pockets and waffle-weave polyester (47%) lining to withstand tough outdoor conditions 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 Superior run time, up to 8 hours of heat on a single battery charge of an M12 REDLITHIUM battery pack Multiple heating zones – 3 sewn in carbon fibre heating zones distribute heat to core body areas Easy touch heat controller – 3 heat settings: High, Medium, Low M12 battery holder is stored in a concealed battery pocket for increased comfort and convenience Hood fits easily under hard hat Integrated cell phone pocket Machine washable and dryable Flexible battery system: works with all MILWAUKEEÆ M12 batteries