HNH Comfortable Cooling Vest for Hot Weather Outdoor Activities Why I need purchase this kind of Cooling Vest ? Cooling Vest Applications: Work in Hot Weather -Gardening, Hiking, Running, Walking and Construction Avoid Heat-Induced Illness. Outdoor Cooling Vest a Must for Adults Spending Time in the HeatState of Art Cooling System: Combines Evaporation Technology to Enhance Cooling with Air Conditioning Battery Power, Portable Outdoor Wear, Unique Mesh Back Pocket Adds Option for Ice Packs to Increase Cooling Efficiency.360° Air Supply: HNH Cooling Vest has effective prevention of heat stroks and works comfortably. It can quickly evaporate sweat, and keep cool for a long time. It is an essential clothing if you has MS or work in a hot environment.Powerful 3 Speed Fans: According to your personal feeling, there are 3 speeds adjustable, Which can quickly cool down by evaporating your sweat at a high speed.Wearalbe Fan Design: The cooling vest carries two fans on your body. The fan are small, lightweight, and portable. Please Check the Size Befor you Order The Cooling Vests are Unisex.