1.Please check the size chart in the picture carefully and measure the length of your dog's chest, neck and back. Our small dog sweaters are for small breeds only, not for any medium or large breeds. 2.Dog fleece pajamas are made of fleece fabric. Dog pajamas are soft and cozy; the soft fluffy fabric will keep your dog warm on especially cold days. 3.This dog pajamas has an open crotch, so your dog doesn't need to take it off when going to the bathroom. The puppy pajamas are suitable for daily, indoor or outdoor activities. The puppy clothes pajamas are great for preventing your pet from catching a cold in winter when the air conditioning is on. It is a good choice for winter clothing. This puppy pajamas is also a great prop for dog photography during holidays and Christmas. 4.Dog Four Legged Pajamas Protect healing scars, allergies or other skin problems from licking and scratching during recovery Rashes, this puppy pajama set is suitable for wearing at home. Suitable for breed, fashionable and colorful winter coat for dogs, suitable for all types of dogs Quantity: 1pcsColor: brownFabric: fleeceSeason: Autumn and WinterApplicable to cats and dogsSize:M has a back length of 25 centers, a Chest Circuit of 37 centers, a neck Circuit of 26 centers, and a reference weight of 2-3 kilograms;L has a back length of 30 centers, a Chest Circuit of 42 centers, a neck Circuit of 29 centers, and a reference weight of 3-4 kilograms;XL has a back length of 35 centers, a Chest Circuit of 47 centers, a Neck Circuit of 32 centers, and a reference weight of 4.3-6 kilograms;XXL has a back length of 40 centers, a Chest Circuit of 52 centers, a Neck Circuit of 35 centers, and a reference weight of 6-9 kilograms