Features: 9-Zone Heating: 9-zone heating vest is designed with heating zones for important parts such as the neck, abdomen, shoulders, and back waist that are prone to cold. The temperature is evenly distributed, which can effectively lock the temperature and keep warm, promotes bloods circulation, and relieves muscle pain. 3 Heating Levels: Dual-control three-level temperature control, long press to turn on, lightly press to shift, and adjust the temperature you want at will. Carbon fiber heating wire, high temperature resistance, not easy to break, safer. USB Power Supplys: With 5V USB plug, compatible with most power banks and chargers on the market. Plugged into a 10000mAh power banks (not included), the vest is capable of retaining warmth up to 6-8 hours at high level, 8-10 hours at medium level, and 10-12 hours at low level. High-Quality: Made of high-quality fabric, breathable, warm, soft and comfortable. Micro-elastic comfortable cuff design, comfortable to wear and free movement. Support machine wash and hand wash. Wide Application: Heated vest for men and women, lightweight and comfortable, perfect for winter daily commuting, hiking, skiing, biking and more. It is a nice gift for family, friends, colleagues, outdoor enthusiasts, etc. Specifications: Color: Black/ Camouflage(optional) Material: 100% Polyester Reated Voltage: 5V Size: S / M / L / XL / 2XL / 3XL / 4XL(optional) S: Length: 63cm; Chest: 102cm; Shoulder Width: 39.1cm M: Length: 65cm; Chest: 106cm; Shoulder Width: 40.3cm L: Length: 67cm; Chest: 110cm; Shoulder Width: 41.5cm XL: Length: 69m; Chest: 114cm; Shoulder Width: 42.7cm 2XL: Length: 71cm; Chest: 118cm; Shoulder Width: 43.9cm 3XL: Length: 73cm; Chest: 122cm; Shoulder Width: 45.1cm 4XL: Length: 75cm; Chest: 126cm; Shoulder Width: 46.3cm Package Size: 400 * 300 * 30mm/ 15.7 * 11.8 * 1.2n Package Weight: 420g/ 14.8oz Packing List: 1 * Heated Vest