The Gerbing 7V Men's Khione Vest 2.0 is an updated version of its predecessor, introducing an impressive design combined with an array of cool features. This heated clothing offers up to 135°F of temperature, thanks to its patented Microwire heating technology that keeps your chest and back warm even in harsh winter temperatures. In addition to this, the vest boasts a premium grade manufacturing from durable ripstop fabric, which not only maintains optimum insulation but also defends against water and wind. A 7V lithium-ion battery with 3400 mAh power capacity ensures a constant heat supply for hours. The 200-fill synthetic down promotes close-fitting while its breathable & flexible fabric offers freedom of movement for active sports, such as skiing, trekking, running, and so on, making it ideal activewear for your daily activities.