The Milwaukee M12 Heated Hybrid Puffer Jacket Bare Unit is a hybrid puffer jacket that creates and distributes heat with carbon fibre heating elements, and powered by a M12 REDLITHIUM-ION battery that delivers 8 hours worth of charge. Users can control the heat levels with three distinct settings, meaning the jacket is versatile enough for a range of environments. The jacket is resistant to both wind and water, and is machine washable and dryable. The high-wear zones are reinforced to prevent abrasions and tears. The battery pocket is also concealed to reduce the risk of user interference. Ideal for use with outdoor jobs in harsh environments.