The MILWAUKEE® 3X Gray M12™ TOUGHSHELL™ Heated Jacket Kit is powered by M12™ REDLITHIUM™ Battery Technology and features an advanced heat technology system. Combining lightweight and durable carbon fiber heating elements, Quick-Heat functionality, enhanced fabric construction, and optimized interior liners, the M12™ TOUGHSHELL™ Heated Jacket delivers HEAT BUILT TO OUTLAST. The new generation TOUGHSHELL™ Stretch Polyester has been re-engineered to stretch and move 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 for versatility and comfort depending on the situation. This Milwaukee heated coat is a go-to for protection from the elements on the jobsite or when enjoying the outdoors.