Powered by M12 Redlithium Battery Technology， Milwaukee M12 Toughshell Heated Jackets are built with 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. Available in black， gray， navy blue and red with sizes small through 3XL， this coat is a go-to when needing protection from the elements on the jobsite or enjoying the outdoors.