The Ruffwear Swamp Cooler Dog Vest is designed to keep your canine companion cool and comfortable during warm weather adventures. This evaporative cooling vest utilizes strategic material choices and a thoughtful design to combat the challenges of exploring in the heat. The light-colored outer fabric reflects solar radiation, providing shade and preventing overheating. When wet, the vest activates Ruffwear's Swamp Cooler™ technology, creating a refreshing, just-stepped-out-of-the-lake feeling for your dog. Simply soak the vest in water, wring it out, and fasten it around your dog. As the water evaporates, it draws heat away from your dog's body, helping them stay cool and energized. Re-soak the vest to recharge the cooling effect. The Swamp Cooler Vest is compatible with most harnesses, including Ruffwear's Front Range, Hi & Light, and Web Master harnesses, featuring an integrated leash portal for easy attachment. Side-release buckles make it easy to put on and take off. * Evaporative cooling technology keeps dogs cool in warm weather * Light-colored fabric reflects solar radiation * Compatible with most harnesses * Easy to use: just soak, wring, and fasten * Provides UPF 50 sun protection