Order online at Screwfix.com. Versatile, USB-rechargeable WorkSkin heated base layer powered by REDLITHIUM USB battery technology with carbon fibre heating elements to create and distribute heat to the chest and back, with quick-heat function allowing heat to be felt up to 3 times faster in the chest and upper back heating zones. Features mid-weight construction from durable, pilling-resistant material to keep the body warm and dry whilst working, with raglan-style sleeves and seamless shoulders for improved mobility and comfort. Fully heats up in 2.5 minutes. Powered by L4 USB rechargeable REDLITHIUM battery pack. Provides excellent run time - up to 180 minutes of heat on low level. FREE next day delivery available, free collection in 1 minute. Milwaukee L4HBLB-301 4V Li-Ion RedLithium Long Sleeve Heated Base Layer Black Large 42" Chest - Bare - Screwfix