Milwaukee M12™ TOUGHSHELL™ Heated Jacket is powered by M12™ REDLITHIUM™ Battery Technology and features an advanced heat technology system that combines lightweight and durable carbon fiber heating elements, Quick-Heat functionality, enhanced fabric construction, and optimized interior liners to deliver heat built to outlast. New generation TOUGHSHELL™ Stretch Polyester has been re-engineered to stretch and move as you work while being as tough as previous TOUGHSHELL™ jackets. This MILWAUKEE® heated jacket has a unique battery pocket Pass-Thru design that is easy to use with front or back pocket battery placement, allowing you the versatility and comfort needed depending on the situation. Includes M12™ compact charger & power source.