Keep toasty warm this winter whether enjoying the outdoors, working in your office, or sitting at home. Simply plug vest in to any phone charger and select from 3 instant heat settings. Vest features 3 warming zones on the back and chest area to deliver cozy comfort during your favorite fall and winter activities. Zippered front, 2 zippered side pockets, and 1 zippered interior pocket to hold charger with complete use and washing instructions sewn onto the interior pocket. Available in sizes S-XXL. Hand wash and air dry only.