UNIPUP 2 Pack Cooling Shirts for Dogs, Lightweight Mesh Breathable Dog Clothes for Medium Dogs Boy Girl,Sun-Protection Sleeveless Shirts for Dog&Cat Puppy Vest Pet Apparel - LBrand: UNIPUP Color: Grey&Orange Features: FOR SMALL DOGS: Available in 6 sizes from XS to 3XL which can fit different sizes of dogs. You can select the appropriate size according to the priority order of chest > back > weight > neck. If your dog is between two sizes, we suggest the larger one. INSTANT COOLING: In the hot summer, dogs will open their mouths, stick out their tongues, pant quickly, and emit hot and humid air to lower their body