High-quality materials: breathable mesh material + highly absorbent cotton + high-quality cooling fabric that evaporates excess heat and reflects ultraviolet rays. It has good water absorption and high wearing comfort, keeping pets cool in hot weather. How to use: First, wet the dog's cooling vest in cold water, wring out excess water, and place it on the dog. Simply repeat the mentioned steps when you feel the vest needs to be \"recharged.\" Size information: 6 sizes to meet the needs of different dog breeds. Size reference: Available in sizes S/M/L/XL/XXL/XXXL. Easy to wear: The dog's cooling vest is designed with a belly buckle for easy on and off. There are double D-buckles on the back so you can attach the leash. You no longer need to buy an extra harness collar when your dog wears our cooling vest. Ideal for your very active dog. This vest is suitable for pets during walks, sports, climbing, training, and much more. Suitable for most small, medium, and large dogs. These dog clothes are a great gift idea for your beloved pets on hot summer days! Choose the appropriate pet cooling jacket according to the size chart. Be sure to measure chest circumference, neck circumference, and back length before choosing a size. Make sure there is enough space to slide two fingers between the tape measure and the dog's neck and chest circumference.