Features: Revolutionary enhanced heating technology ensures rapid, even warmth with safety, maintaining consistent heat even if the fabric is damaged. Adjustable unisex design with triple layer construction (waterproof polyester) offer versatile sizing and retains warmth without power, suitable for 7.4V high capacity batteries. Designed for outdoor enthusiasts of all ages – men, women, seniors, and teens – seeking light weight heat during hiking, camping, or winter sports. Optimized for unrestricted movement in cold environments like golf courses, hunting, or mountain expeditions, functioning as standalone outerwear or layered insulation. Combines practical craftsmanship with heating zones and a sleek sleeveless design, making it a gift for birthdays, holidays, or everyday outdoor adventures. Specifications: Component: Polyester fiber Size:S 62.99cm(24.80inch) x39.1cm(15.39inch) x102cm(40.16inch) Size:M 65cm(25.59inch) x40.3cm(15.87inch) x106cm(41.73inch) Size:L 67cm(26.38inch) x41.6cm(16.38inch) x110cm(43.31inch) Size:XL 69cm(27.17inch) x42.7cm(16.81inch) x114cm(44.88inch) Size:XXL 71cm(27.95inch) x43.9cm(17.28inch) x118cm(46.46inch) Size:XXXL 73cm(28.74inch) x45.1cm(17.76inch) x122cm(48.03inch) Size:4XL 75cm(29.53inch) x46.3cm(18.23inch) x126cm(49.61inch) Package Includes: 1xElectric heating vest note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.