Fieldsheer by Mobile Cooling's Hydrologic vest uses a Super Absorbent Polymer SAP fabric with a more absorbent interlining that absorbs and holds cool water for extended cooling in even the hottest conditions. Designed for anyone that is in the heat for prolonged periods and needs rugged craftsmanship with high-vis features, this vest offers lasting comfort in even the hottest conditions. Soak the vest in water for 1-2 minutes, wring out excess water, and wear it over your work shirt to cool your core through evaporative cooling. The evaporation process pulls heat away from your body providing an instantaneous cooling effect. It helps maintain a safe, comfortable internal temperature throughout the day in the hottest conditions, made from low-profile, lightweight materials that store quickly when not in use. Its powerful cooling capabilities allow you to stay cool through the day no matter how hot it gets.Designed for workers in industrial professions who need high visibility and outstanding performance to keep them cool, comfortable and safe no matter what the day throws at them. Whether it's hot indoor environments or a construction site in the heat of summer Fieldsheer's Mobile Cooling technology keeps you cool so you can get the job done. Utilizing quilted Hydrologic absorption and evaporative cooling, this vest provides cool comfort all day long.Pair this cooling shirt with our Mobile Cooling Skull Cap and Cooling Neck Gaiter for the ultimate cooling combination!Fieldsheer's Mobile Cooling Ice Packs adds extra cooling with Hydrologic plus technology. The Ice Packs are activated inside of the freezer and then placed inside the pockets of the Hydrologic garments to lower body temperature by slowly absorbing internal heat and releasing it to keep the skin cool, the ice packs offer immediate relief from dangerous heat conditions providing long-lasting comfort in even the most extreme heat.Mobile Cooling Ice Packs with Hydrologic Plus technology with rapid action to bring the core temperature back to safe levels in minutes. Ice packs are made with pure water that can be cooled by refrigeration or Freezing to provide you with long lasting cooling. Designed specifically to be used in conjunction with our full line of Hydrologic Vest garments to extend your cooling with additional ice packs. By removing latent heat through the evaporative process and dropping internal temperature cooling for the skin. Our ice packs ensures lasting performance to keep your cool for hours.Water Activated Cooling:Mobile Cooling Hydrologic Vest:1. Soak in cold water for 3-5 mins.2. Remove excess water from the surface.3. Enjoy! When wearing, turn over occasionally to refresh.Vest Features:ANSI/IEA 107-2015 Class 2 CertifiedHydrologic Quilted Evaporative Cooling fabric keeps you cool longer, simply wet it and wear it!Sunsheer UPF 30+ offers protection from harmful UV raysOdorsheer anti-microbial technology prevents odor causing bacteria from growingSweatsheer moisture-wicking technology keeps you cool and dry all day longComfortable V-neckFront ZipperFlexible side knit for customized fitOptional 3 phase removable Cooling Ice Packs provide even more cooling options100% polyester quilted woven fabric85% Nylon 15% Spandex Contrasts100% Polyester LiningUnisex sizing: SM-4XLIce Packs Features:3 removable Mobile Cooling Ice PacksMade with Pure WaterNon-Toxic Freezable PackReusable100% polyester ice pack sleeves ensure easy slide into the Hydrologic Vest internal pocketsColor: GrayIncludes:1 Unisex Hydrologic Pro Vest3 Ice Packs3 Ice Pack Cloth covers Fieldsheer Mobile Cooling Unisex Hydrologic Pro Vest with Ice Packs