Cool off while working a long shift with your Chill-Its Unisex Premium Dry Evaporative Cooling Vest with Zipper Closure. This evaporative vest reduces the effect of heat exhaustion and fights fatigue while working or playing in the summer outdoor heat. The vest provides up to 3 days of cooling power to help maintain a healthy body temperature. Each premium cooling vest features exclusive patented dry technology that keeps wearer completely dry and comfortable during the entire evaporative cooling process. Premium cooling vest features exclusive patented dry technology that keeps wearer completely dry and comfortable during the entire evaporative cooling process Up to 3 days of cooling power to help maintain a healthy body temperature Fill vest with 13 oz. - 20 oz. of water Lightweight and durable vest made of industrial grade quality nylon Elastic wrap waist closure allows for a customized fit Cooling material is treated with an anti-microbial that prevents mold growth, always keep the cap closed to maintain vest's effectiveness Evaporative vest reduces the effect of heat exhaustion and fights fatigue while working or playing in the summer outdoor heat 25% less cooling material than a comparable size offering of the 6685 Standard Dry Vest Machine washable for convenience Ideal summer work vest for workers in pulp/paper, iron/steel, vulcanizing, foundries, etc. or for people running, biking, doing yard work, riding motorcycle and more Mesh side-panels provide additional ventilation and stretch V-neck design with front zipper closure for a snug fit The cooling vest comes in six different sizes ranging from medium (38 in. - 41 in. / 97 cm - 104 cm) to 4XL (53 in. - 56 in. / 135 cm - 142 cm) Chill-Its Unisex Premium Dry Evaporative Cooling Vest with Zipper Closure