For hot adventures in high summer temps, we get some peace of mind that our dogs can count on the Swamp Cooler Vest from Ruffwear to help them stay comfortable outside. The light-colored polyester air mesh fabric reflects solar radiation and provides shading, and when we get the vest wet, it activates Ruffwear's Swamp Cooler Tech for that refreshing, just-stepped-out-of-a-lake feeling our pooches love. We just give it a soak, put it on our furry friend, and go. Plus, with reflective trim, this vest gives dogs added visibility in low-light conditions.