Men's 13W Heated Midlayer Shirt with HeatSync - Black
What it is: bluetooth enabled longsleeved midlayer with three stretchable heating zones
Heat-zones: right & left chest, back
Runtime: 10 hrs (low), 6 hrs (medium), 3 hrs (high), in-app runtime varies on setting
What's in the box: includes heated top, 7.4V battery (750B), and USB-C charging cable