When shade is low and the mercury is high, dogs can count on the Ruffwear Swamp Cooler Dog Vest to help them get outside. This vest offers evaporative cooling for hot weather and is compatible with most harnesses. 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 Ruffwear's Swamp Cooler™ technology for a cooling sensation, like they've just taken a dip in the lake. This vest helps keep your furry friend comfortable and safe during outdoor activities in warm weather. * Evaporative cooling for hot weather. * Light-colored fabric reflects solar radiation. * Compatible with most harnesses. * Available in Sage Green. * Material and design offer solutions for challenges that warm-weather exploring presents.