HyperKewl Evaporative Cooling Vest, Hi-Viz LimeThe HyperKewl Adult Cooling Vest is a lightweight, fast and effective cooling vest that provides 5-10 hours of cooling relief per 2-3 mins of soaking during competition or strenuous activity.Features of HyperKewl Cooling Vest:v-neck with zipper closurequilted nylon outerHyperKewl fabric innerwater repellent nylon linerblack poly-cotton trim