When shade is low and the mercury is high, dogs can count on the Swamp Cooler to help get them outside. Strategic material choices and design offer solutions for the challenges that warm-weather exploring presents. The light-colored fabric reflects solar radiation and provides shading while wetting the vest activates our Swamp Cooler™ Tech for that refreshing, just-stepped-out-of-a-lake feeling also known as evaporative cooling. Just give it a soak, put it on your dog, and go. When it dries, re-soak it to recharge it. The Swamp Cooler Vest includes side-release buckles for easy on/off and a lead portal so it can be worn over a harness – topping of the essential features to make it our highest-coverage cooling option in the Swamp Cooler™ Collection. What's New: We updated the external air mesh for improved abrasion resistance and improved water absorption, and we developed a new construction that retains more water in high-exposure zones on the vest for a longer charge. Features UPF 50 COVERAGE Vest style provides good coverage for maximum shade with side-release buckles for easy on/off. UPF 50 COVERAGE Vest style provides good coverage for maximum shade with side-release buckles for easy on/off. LEAD PORTAL Lead portal on back for layering over a harness during on-leash pursuits. Relaxed Fit for maximum shade with UPF 50 coverage and side-release buckles for easy on/offWicking outer layer reflects heat and facilitates evaporationAbsorbent middle layer stores water for evaporationMesh lining keeps dog dry and comfortableLeash portal on back is compatible with most harnessesReflective trim for visibility in low-light conditions and light loop for attaching The Beacon™