The redesigned M12 Heated TOUGHSHELL Jacket from Milwaukee Tool features an advanced heat technology system to last longer and re-engineered stretch polyester that offers 80 percent more stretch and 5X longer life over its previous generations. With 3X faster heat, the redesigned heated jacket fully heat-up in 2-1/2 minutes and is designed with new inner lining material that optimizes heat transfer to the user. The jacket includes a battery pass-through that allows for battery placement in the front or back pocket and is powered by an M12 REDLITHIUM 3.0 battery. It's available in black, grey, navy, and red.