Procuct IntroductionThe dog rain jacket is a high quality, super waterproof, windproof, breathable raincoat designed to keep your pet warm and cozy. Our dog raincoats are specially designed for small and medium-sized dog breeds.Two reflective strips on the back optimize proper visibility and improve the safety of walking at night or in rainy days. How to measure the dog size?Before taking any measurements please ensure your dog is standing still and upright, looking forward and on all fours. To order the correct size measure along the back of your dog from the withers to the start of the tail. Please then refer to the size chart and breed guideline which you will find in the images for this product.Warm TipsIf your dog is between sizes, or if your dog is strong or bushy, we suggest you select the larger size to make sure your dog is comfortable.Size & Measurement MethodsChest: measure the thickest part of the chest, add 2CM (1 inch) will be better. (Usually behind the two legs)Length: Make sure your dog stands properly, not sitting or lying. Measure along the dog's backbone from the base of the neck to 5CM (2 inch) front the base of the tail.Note: You must measure your dog,reference size chart,Priority reference chest girth.Size ChartXS: Back Length 10.6inch(27cm)S：Back Length 12.9inch(33cm)M：Back Length 14.5inch(37cm)L：Back Length 16.1inch(41cm)XL：Back Length 17.7inch(45cm)