Features: 1.3 Levels Adjustable: The fan is adjustable in 3 levels to meet your different needs, low noise, and can work continuously. 2.Excellent Endurance: This suit has 20,000 mAh power supply, with a high grade that lasts 12 hours and a low grade of about 24 hours, which can be used for a long time and has a excellent endurance. 3.Fast Cooling: This air conditioned clothing is made by a high speed fan at waist height, which allows a large amount of air outside the body to flow parallel along the body surface, thus quickly evaporating sweat and lowering the body surface temperature. 4.Multiple Functions: This air conditioning clothing can be used not only to cool down but also to prevent against the sun. 5.Wide Application: This air conditioning clothing is universal for multiple scenes and can be used in high temperature environments, outdoor environments, indoor environments, outdoor adventures, and travel. 6.Polyester Fiber: The air conditioning clothing is made of polyester fiber material, and the fabric is light, cool and breathable, not easily damaged, and can be used for a long time. Specification Item Type: Cooling Fan Vest Material: Polyester, Plastic, Metal, Electronic Components Rechargeable Battery Type: Lithium battery ( Shipped With Matching Battery ) Rechargeable Battery Capacity: 20000mah/3.7V Charger Input: DC 5V=2.1A Charger Output: DC 5V = 2.1A Size: L: Length: 67cm/26.4in, Shoulder Width: 44cm/17.3in, Bust: 120cm/47.2in, Suggested Height: 165-175cm/64.9-68.9in, Applicable Weight: 65-75kg/143.3-165.3lb XL: Length: 69cm/27.2in, Shoulder Width: 46cm/18.1in, Bust: 124cm/48.8in, Suggested Height: 170-180cm/66.9-70.9in, Applicable Weight: 73-83kg/160.9-183lb XXL: Length: 71cm/27.9in, Shoulder Width: 47cm/18.5in, Bust: 128cm/50.4in, Suggested Height: 175-185cm/68.9-70.9in, Applicable Weight: 80-90kg/176.4-198.4lb Package List: 1 x Clothes2 x Fan1 x Speed Control Line1 x Power Charger1 x Charging Cable1 x Manual