Dune Menas Heated Vest - 10 Hrs Of Heat 3 Heat Zones With Battery & Charger Machine Washable All Day Warmth OnyxThe MenAs Dune heated puffer vest brings you versatility, warmth and control over your own heat. ItAs built-in heating system uses conductive-thread technology, powered by an industry-leading 6500 mAh lithium-polymer battery. This combina..