Chill-Its 6665 Embedded Polymer Cooling Vest with Zipper, Nylon/Polymer, Large, Lime Polymer-embedded cooling technology quickly activates for up to four hours of relief from the heat. 100% quilted nylon exterior with mesh side panels for ventilation. Hand washable. Soak in water two to five minutes to activate. Remains hydrated for up to four hours. Mesh side panels offer improved ventilation and stretch. 100% nylon. Our Price Buys you: 1