All day cooling: Formfitting design with a zippered closure keeps the cooling effect close to your dog's body, while oversized armholes allow full range of motion for active adventures. Lightweight sun protection: The spandex back panel is rated UPF 50+, offering lightweight sun coverage to keep your dog cool in hot conditions. Stay dry and comfortable: Mesh lining keeps your dog dry while the wicking outer layer reflects heat and facilitates evaporation for enhanced cooling performance. Cooling made simple: Soak the vest with water to activate our Swamp Cooler Tech — the middle layer absorbs and stores water for continuous cooling. Designed for adventure: Lightweight materials and thoughtful construction make it ideal for outdoor activities, ensuring your dog stays cool and comfortable on the go. The Ruffwear Swamp Cooler Zip Vest efficiently cools dogs during light and fast, high-intensity adventures through shading and evaporative cooling. It features a 3-layer construction to cool their core: a wicking outer layer reflects heat and facilitates evaporation, an absorbent middle layer stores water for evaporation, and a mesh lining keeps your dog dry and comfortable. To activate, simply soak the vest in water, zip it on your dog, and enjoy cooling relief on the go. Updated with a durable polyester stretch fabric for improved fit and color retention, the Swamp Cooler Zip is ready for fast-paced, warm-weather adventures.