Note: Khione Women's Jacket runs small, please order 1 size larger than you normally wear.. Breathable, 7V battery heated puffer jacket. Designed to be worn close to the body, under your outer jacket, or over a thin polyester base layer. 7V heating system lets you enjoy hours of tailgating, hunting, sports, or working outside in a cold environment. Durable, rechargeable 7-volt lithium Ion batteries power with an integrated microprocessor and LED switch gives you real-time battery status and power level monitoring. Microwire­™ Heating Technology utilizes patented micro-sized stainless steel fibers intertwined and encased in a proprietary waterproof coating. 4 Heating zones and 4 temperature settings. Heat lasts up to 8 hours. Constructed of durable ripstop fabric with 200-fill synthetic down and designed to be close-fitting for added warmth. Bonded lining provides comfort, heat performance and heat retention. Lifetime Microwire™ Warranty from manufacturer. Gerbing 7V Battery Heated Jackets & Vests Include:. 7V 3400 mAH Rechargeable Lithium-ion Battery Pack (25.16Wh). Wall Charger. Detailed Instructions. Gerbing Lifetime Warranty.