The next generation M12 Heated TOUGHSHELL Jacket from Milwaukee Tool features an advanced heat technology system to last longer and re-engineered stretch polyester to offer 80 percent more stretch and 5X longer life over its previous generations. With 3X faster heat, the redesigned heated jacket fully heats up in 2-1/2 minutes and is designed with new inner lining material that optimizes heat transfer to the user, the company says. 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. The jacket is available in black, grey, navy, and red.