The Mobile Warming by Fieldsheer Backcountry Heated Vest is a stylish and comfortable everyday vest with an integrated out watching hockey or football, a quick trip to the store, or an all day excursions in the outdoors. This versatile design can be worn over a shirt or hoodie, or when the weather turns really cold, the Primaloft eco-friendly synthetic down insulation makes for a great base layer under your winter coat. Powered by a slim 7.4volt Powersheer TM Rechargeable Lithium-Ion battery, the Backcountry provides up to 135°F of heat, or adjust between 4 temperature settings, for up to 10 hours of heat, using the Integrated Touch Control Button, or your cell phone, with it's built-in Bluetooth and the MW Connect app. The Backcountry, a perfect combination of style and technology, great for every day use, or those winter days outdoors.