Milwaukee Tool M12 Black Heat Jacket Kit, M

Advanced Heat Technology System with Quick Heat Function: 3X faster heat up time NEW TOUGHSHELL™ Fabric provides 80% More Stretch and continues to deliver 5X Longer Life than the original Battery Pass-Thru: Position the battery in the Front or Back Pocket to improve comfort FREEFLEX™ Mobility: Dropped shoulder seams and under-arm gussets create improved range of motion All Day Run-Time: Up to (12) hours of run-time with the upgraded M12™ REDLITHIUM™ 3.0 Compact Battery Pack on low setting