The Fieldsheer Dual Power Heated Vest Water Resistant Black XL New With Tags [NWT] The Fieldsheer powered by Mobile Warming heating technology Dual Power Heated Vest is the industry’s only 12-volt heated textile motorcycle Heated Vest that is designed to tie into your vehicle's 12-volt electrical system or run independently using a 12-volt Lithium-Ion battery. Dual Power’s constructed of a highly flexible water-resistant and windproof Windshark softshell material that keeps you warm and dry in wet or windy conditions. When conditions get cold, simply turn up the heat with the touch of a button!