HyperKewl Evaporative Cooling Vest, Hi-Viz LimeThe HyperKewl Evaporative Cooling Vest is also available to fit children. This Evaporative 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 trimSizes: 5-6 (25-27" chest), 7-9 (27-29" chest), 10-12 (29-31" chest)