The Term-ic Heated Vest Women perfectly balance style, warmth and practicality. It is the ideal insulated-puffy layer for all your outdoor and winter sport activities. The 5 anatomically designed heated areas on the vest deliver consistent uniform warmth throughout the jacket. Thin, lightweight and packable, it can be easily worn as a first or second layer. Fitted with Bluetooth (C) technology, you can control remotely the heat settings via your smartphone, using the Thermic Heat Control App. Works with all USB powerbanks / external batteries. Sidas Heat Vest + Slim Powerbank Womens | Black | X-Small | Christy Sports