Features 1、Fast Heat Dissipation: One key to open the mode, the wind quickly cover the body surfaces discharge heat dissipation fast, physical rapid cooling always keep the body cool. 2、Circulating Wind: Three speed control, circulating wind, comfortable fabric, wear resistant and anti wrinkle, micro perforation sweat. 3、Working Principle: Through the waist large wind high speed fan to make a large amount of air outside the body along the body surfaces parallel flows so as to quickly evaporate sweat and reduce the body surfaces temperature. 4、Strong Wind: Body cooling jacket has an even and dense cutting airflow with a 30 degree diagonal structure creating a more powerful wind. 5、Easy to Disassemble: Fan thread rotating fixed, easy to disassemble, solidly, plug with its own snap to prevent frequent activities caused by poor contact. Specification Item Type: Cooling Fan Jacket Material: Nylon Number of Levels: Three Levels, One Comfortable Wind, Two Cool Wind, Three Strong Wind (Shipped Without Power Bank) Applicable Scenes: Indoor Environment, Outdoor Environment, Construction Workers, Outdoor Adventure, Etc. Size: Approx. M: Length 66cm / 25.98in, Bust 112cm / 44.09in, Sleeve Length 56.5cm / 22.24in, Shoulder Width 45.9cm / 18.07in, Suitable Height 165-170cm / 64.96-66.93in, Suitable Weight 55-65kg / 121.3-143.3lb L: Length 68cm / 26.77in, Bust 116cm / 45.67in, Sleeve Length 58cm / 22.83in, Shoulder Width 47.1cm / 18.54in, Suitable Height 170-175cm / 66.93-68.9in, Suitable Weight 65-75kg / 143.3-165.3lb XL: Length 70cm / 27.56in, Bust 120cm / 47.24in, Sleeve Length 59.5cm / 23.43in, Shoulder Width 48.3cm / 19.02in, Suitable Height 175-180cm / 68.9-70.87in, Suitable Weight 75-85kg / 165.3-187.4lb XXL: Length 72cm / 28.35in, Bust 124cm / 48.82in, Sleeve Length 61cm / 24.02in, Shoulder Width 49.5cm / 19.49in, Suitable Height 180-185cm / 70.87-72.83in, Suitable Weight 85-95kg / 187.4-209.4lb Fan Color: Black Jacket Color: Blue Package List 1 x Cooling Jacket 2 x 5V Fan 1 x Cable 1 x User Manual