The Jet Stream is a cooling vest that uses shade and evaporative cooling to keep your dog cool during light and fast, high-intensity activities. To activate, simply wet the Jet Stream and wring out. The layered construction is designed to keep your dog cool when the temperature rises. The outer layer reflects heat and facilitates evaporation while the middle layer absorbs and stores water for evaporation. The comfortable inner layer transfers the Jet Stream's cooling effect to your dog. Additionally, the vest style offers UPF 50+ coverage and maximum shade. The zippered closure provides a high-performance fit that allows your dog to run and play without restricting movement. The three-layer construction provides cooling, support, and stability that's sure to last for many seasons of adventures.