Showyond Blue Warm Dog Coat, Waterproof with Built-in Harness Size X-Small Dog Size 10/X-Small fits chest girth of 14.1 inches, neck girth of 10.6 inches, and back length of 10.6 inches. A size chart is included in the pictures to aid fitting. This dog jacket is warm and cozy, the inside of the dog winter jacket is made of high-grade shaker fleece to keep your dog warm during the cold winter. The zipper design on the back of the dog coat makes it very easy to put on and take off without having to go around your dog's head. The dog winter coat's outside is made of waterproof & windproof polyester, which is soft, breathable and water resistant, very easy to wash and clean. The center is filled with PP cotton which is very warm and holds the dog's heat well so that it doesn't feel cold. The dog jacket's inside is made of high-quality polar fleece, which is comfortable and skin-friendly and makes the dog enjoy wearing the dog clothes.