SIZE M: Neck 13.8'', chest 16.5'', back 12''. Note: Our pet clothes are developed for small and medium-sized dogs. The sizing system may be different from the size you normally purchase, please refer to the size chart before purchasing. If your dog is between two sizes, buy one or two sizes larger DOG COLD WEATHER COAT: The outer layer of the dog winter jacket is made of high quality fabric, which is windproof and snowproof. The inner lining is double-sided soft and comfortable shaker fleece, which serves as a quick warming effect. The filling is high quality cotton, fixed by diagonal quilting, so that the cotton is evenly distributed and will not run even after washing ZIPPER DESIGN EASY TO WEAR AND TAKE OFF: This dog snow jacket has a high quality non-slip zip on the back with orderly zip teeth, which makes the zipper zip up smoothly and won't get stuck. The zip has slider stopper and flap stopper, which can effectively prevent snagging on your dog's fur and protect your pet's skin STURDY D-RING: The D-ring on the back of the dog fleece jacket is made of ultra-durable material giving this winter coat also the function of a chest harness. You can directly buckle the leash to go out to short walk your dog. It eliminates the tedious process before going out, and less wearing makes the dog more comfortable THOUGHTFUL DESIGN: The dog turtleneck jumper is not only durable and wear-resistant with a high value, but also has a humane design according to the needs of the dog. The chest is designed with an elasticated band to fit the dog's body better and keep it warmer, and the belly is cut to make it easy for the dog to pee COMFORTABLE AND WARM DOG VEST JACKET: This fall dog clothes is made of high quality waterproof fabric with fleece lining. The windproof dog fleece undershirt will keep your dog warm during outdoor activities. It is suitable for both indoor and outdoor activities. DOG COAT WITH BUILT-IN HARNESS: Two D-rings on the back for attaching a leash or poop bag. CREATIVE DESIGN: Back zipper closure of dog clothes for winter is not easy to snag your dog's fur. The dog clothes for winter's elastic band on the belly won't make your dog feel oppressed, and the edge of the cuffs is thickened, so it won't hurt your dog by pulling. Machine washable IDEAL DOG COVER FOR COLD: The dog apparel & accessories is available in 3 colors (red and black checkered, purple, rose) and 3 sizes (S/M/L), suitable for small and medium-sized dogs, such as Yorkie, Shih Tzu, Chihuahua, Bugs, Bichon Frise, etc.