Women's Winter Warm Waistcoat Electric Heating Vest USB Charging Winter Warmer Coat Fishing Climbing Skiing Exploration Snowmobile Motorcycling Vest 5 heating sheet are put on the side of waist, belly and cervical to regulate the meridians, promote blood circulation and remove blood stasis, and promote metabolism by carbon fiber heating according to the principle of medical hot compress. Perfect for winter ice fishing, snowmobile climbing and exploration. Feature: 5 HEATING ZONES: Five heating sheets are put on  the side of waist, belly and cervical to regulate the meridians, promote blood circulation and remove blood stasis, and promote metabolism by carbon fiber heating according to the principle of medical hot compress.  3 HEATING LEVEL: 3 available heating settings can be adjusted 40°C-65°C for different temperature of environment. LASTING WARM: Quick heating in seconds, and working time is about 6 hours with 8000mAh full charged power bank(not include) powered. SUPERIOR MATERIAL: Neoprene, anti-statistic and washable, and carbon fiber heating sheet is heat store, which allows hand or machine wash cleaning.  WIDELY USE: Perfect gift for elders, families, friends to enjoy free motorcycling, climbing, snowmobile, skiing and ice fishing. Specification:  Size(CN): S / M / L / XL / 2XL / 3XL  (optional) Material: Neoprene + Carbon fiber  Controllable temperature: 40-65°C Size chart: Size(CN) Length Shoulder Chest Suggested height S 58cm/22.8in 34cm/13.3in 90cm/35.4in 150-155cm/59.0-61.0in M 60cm/23.6in 36cm/14.1in 94cm/37.0in 155-160cm/61.0-62.9in L 62cm/24.4in 38cm/14.9in 98cm/38.5in 160-165cm/62.9-64.9in XL 64cm/25.1in 40cm/15.7in 102cm/40.1in 170-175cm/66.9-68.8in 2XL 66cm/25.9in 43cm/16.9in 106cm/41.7in 175-180cm/68.8-70.8in 3XL 68cm/26.7in 45cm/17.7in 110cm/43.3in 180-198cm/70.8-77.9in Package weight:  475-661g / 1.0-1.4lb   Package size: 31 * 23 * 2.5cm / 12.2 * 9.0 * 0.9in Package list: 1 * Waistcoat Note: Please dry out the USB port after wash before use again.