Product DescriptionThere’s nothing happier than getting your dog outside and spending some time together on walking, running, or even playing fetch. But if your dog feels so hot in the summer, it’s important that keep your dog COOL by using this comfortable Cooling Vest. The vest makes you spend more quality-time outdoors with your best friend. Product InformationItem Weight: 0.11 poundsPackage Dimensions LxW: 11.8 x 15.75 inchesColor: Blue, Yellow, Green, PinkSize: XS, S, M, L, XLBreed Recommendation: Small BreedsCaution1. Measuring chest girth at the broadest part of dog's chest.2. If your dog fits two sizes listed, please choose the larger size.3. If you have any question, please contact us. We will make it right within 24 hours.