Item Type: Heated VestMaterial: Polyester Size: S/160: Length:63cm/24.80in Bust:98cm/38.58in Shoulder:39.1cm/15.39in Collar:7.5cm/2.95inM/166: Length:65cm/25.59in Bust:102cm/40.16in Shoulder:40.3cm/15.87in Collar:7.5cm/2.95inL/170: Length:67cm/26.38in Bust:106cm/41.73in Shoulder:41.5cm/16.34in Collar:7.5cm/2.95inXL/175: Length:69cm/27.1in Bust:110cm/43.31in Shoulder:42.7cm/16.8 Collar:7.5cm/2.95in2XL/180: Length:71cm/27.95in Bust:114cm/44.88in Shoulder:443.9cm/ 1.28in Collar:7.5cm/2.95in3XL/185: Length:73cm/28.74in Bust:118cm/46.46in Shoulder:45.1cm/17.76in Collar:7.5cm/2.95in4XL/190: Length:77cm/30.31in Bust:122cm/48.03in Shoulder:46.3cm/18.23in Collar:7.5cm/2.95inColor: BlackApplication: For elder, work overtime, street work, travel in the cold winter, outdoor duty1Fast Infrared Heating: The heating vest realizes rapid infrared heating through carbon fiber heating wire. No need to wait for warmth, quickly help you drive away the cold. 24 Places and 3 Gears: The heating vest has three adjustable temperature levels. Blue light means 30 , white light means 40 , and red light means 50 . The humanized 4 heating areas are designed for the parts of the neck and back that are prone to coldness. 3Hand and Machine Wash: The heating vest is washable and washed by hand and machine. Unplug the power bank and remove the smart thermostat before cleaning. 4Light and Comfortable: The heating vest is made of lightweight insulation. It helps you keep warm easily without having to wear bulky winter clothes all winter. 5Ideal for Outdoor Activities: This heated vest is ideal for outdoor activities, hunting, skiing, fishing, motorcycling, camping, hiking, offices, etc.