Cooling Vests are great for both men and women to beat the summer heat. The amazing power of evaporation provides hours of cooling comfort for work or play! This Hi-Visibility vest is perfect for industrial workers, crossing guards and runners. The Chill-its Cooling Vest is filled with non-toxic polymers that absorb up to 300x their weight in water - and then slowly allow it to evaporate keeping your body cool in any climate. Staying cool in the heat is important, and these great cooling vests really help you stay cool, safe and comfortable.Chill-Its Evaporation Cooling Vest: Unisex Fit V-neck with zipper closure Quilted nylon outer layer Activated, polymer-embedded fabric inside Water-repellent liner and black cotton-poly elastic trim Lightweight, durable, and washable 100% nylon Water activated cooling Provides hours of relief! Special polymer fabric Cooling Vest Activation: Just submerge in clean water for 1-2 minutes or until desired weight is achieved. Blot dry and cooling vest will remain hydrated for several hours. Re-activate by submerging in water as needed.Cooling Vest Activation: Just submerge in clean water for 1-2 minutes or until desired weight is achieved. Blot dry and cooling vest will remain hydrated for several hours. Re-activate by submerging in water as needed. Ergodyne Chill-Its 6665 Evaporative Cooling Vest - Hi-Viz Lime