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. 1 x Cooling Vest2 x Fan1 x Cable1 x User Manual Item Type: Cooling VestMaterial: Polyester Fiber, NylonSpeed 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, EtcS: 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- 126.8lbM: 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- 148.8lbL: 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- 170.9lbXL: 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