Cooling Vests powered byCoolcore technologyare excellent for dogs on the run! The design allows for greater movement through the shoulder area while playing or competing. There are no straps to fasten or buckles to snap!Coolcoreis an award-winning, chemical-free cooling fabric that offers the ultimate combination of moisture transportation and breathable comfort that keeps the material 30% cooler than the surface temperature of their body. The water-moistened fabric quickly dissipates heat to regulate core temperature. 100% machine washableCoolcorefabrics are mechanically engineered to ensure the cooling power never washes out or deteriorates over time. The process is simple; wet the vest using any temperature of water, wring out the excess and shake to start the cooling. Includes one vest. Patents: 9,121,642 & 8,440,119.