Feature: 1. Breathable Material: This cooling jacket adopts premium polyester fiber and nylon material, resistant to wear and wrinkle, and inbuilt breathable mesh layer offers great comfort. 2. Brushless Fan: This cooling jacket adopts large power fan and brushless motor, reduce body surface temperature and effectively prevent heat stroke. 3. 3 Speed Mode: This fan cooling vest provides 3 fan speed modes, up to 4500RPM high speed and 8 hours use during travelling, camping, cycling and other outdoor activities. 4. Power Bank Powered: This body cooling vest can be easily powered by power bank(not included), easier and more convenient to use. 5. Wide Application: This air conditioned clothes is perfect for fishing, golfing, railway workers, construction workers, airport ground staff, motorcycle riding and other outdoor activities. Specification: Item Type: Cooling Vest Material: Polyester Fiber, Nylon Speed Mode: 3 Fan Speed Mode. Comfy Wind for 1st Mode, Cooling Wind for 2nd Mode, Strong Wind for 3rd Mode (Power Bank Not Included) Application: Indoor, Outdoor, Construction Workers, Outdoor Adventure, Etc S: Length: 62cm / 24.4in, Bust: 114cm / 44.9in, Shoulder: 44cm / 17.3in, Suitable Height: 155-165cm / 5.1-5.4ft, Suitable Weight: 47.5-57.5kg / 104.7-126.8lb M: Length: 64cm / 25.2in, Bust: 118cm / 46.5in, Shoulder: 45.5cm / 17.9in, Suitable Height: 160-170cm / 5.2-5.6ft, Suitable Weight: 57.5-67.5kg / 126.8-148.8lb L: Length: 66cm / 26.0in, Bust: 122cm / 48.0in, Shoulder: 47cm / 18.5in, Suitable Height: 165-175cm / 5.4-5.7ft, Suitable Weight: 67.5-77.5kg / 126.8-170.9lb XL: Length: 68cm / 26.8in, Bust: 126cm / 49.6in, Shoulder: 48.5cm / 19.1in, Suitable Height: 170-180cm / 5.6-5.9ft, Suitable Weight: 77.5-85kg / 170.9-187.4lb. Package List: 1 x Cooling Vest2 x Fan1 x Cable1 x User Manual Note: 1. Please Allow 1 to 3cm Error Due to Manual Measurement. Thanks for Your Understanding.2. Monitors Are Not Calibrated Same, Item Color Displayed in Photos May Be Showing Slightly Different from the Real Object. Please Take the Real One As Standard.3. Do Not Worry if the Product is Wrinkled, It May Be Due to Shipping. After Washing and Drying, the Wrinkle Can Be Removed.