This Reflective Adjustable Dog Cooling Vest will keep your dog cool when going out on a sunny day! You can choose from many different sizes! Please make sure to check the size chart below for the dimensions of each size. To use this vest, pour water onto it and then wring it to get the excess water out. Its water absorption sponge keeps it cool and breathable. It also has reflective strips for walking at night. Finally, it has a D-ring on it for attaching a leash.