Milwaukee Tools heated site gear introduces the classic M12 heated black jacket. FEATURES Heat on demand - sewn in carbon fibre heating wires, distribute heat to core body areas and to the front pockets. Superior run time, up to 8 hours of heat on low level with a single battery charge of an M12™ REDLITHIUM™ 3.0 Ah battery pack (not included). Easy touch heat controller - 3 heat settings: High, Medium, Low. TOUGHSHELL™ stretch 90% polyester and 10% spandex material to withstand harsh working conditions and deliver up to 5x longer life. FREE FLEX™ mobility - additional material under the arms increases range of movement for working overhead. New battery pocket design providing users multiple options for battery placement, allowing adaptability to the situation. Improved .