With the Milwaukee L4 HBLB-301 heated workskin base layer in size L, you stay warm and focused when working in freezing outdoor conditions or cold storage facilities. Designed as a fitted mid-weight layer, it eliminates bulky clothing by delivering active heat to your chest and back via carbon fibre heating elements. The one-touch led controller lets you select between 2 heat settings for up to 180 minutes of run time. Raglan sleeves and seamless shoulders ensure unrestricted mobility throughout the workday. The durable, machine washable anti-pilling fabric keeps you dry and comfortable. Supplied complete with one L4 B3 3.0 Ah Redlithium usb battery, a usb cable, and a wall plug adapter.