Lophipets Dog HoodiesMaterial: 95% Cotton+5% SpandexFabric thickness: MediumFabric stretch: Good6 Sizes Available: XX-Small: Fits 0.5-1.2 lbs, Back Length 5 1/2?, Chest 6-8?.X-Small: Fits 1.2-2.2 lbs, Back Length 7?, Chest 8-10?.Small: Fits 2.2-4.5 lbs, Back Length 8 3/4?, Chest 10-12?.Medium: Fits 4.5-6.5 lbs, Back Length 10 1/4?, Chest 12-14?.Large: Fits 6.5-10 lbs, Back Length 11 3/4?, Chest 14-16?.X-Large: Fits 10-14 lbs, Back Length 13 1/2?, Chest 16-18?.Our sizes are about one or two sizes smaller than the same sizes from normal dog clothes brands. It means if your dog usually wears size XX-Small from other pet brands, you should consider our size X-Small or size Small. Lophipets dog clothes are made for small dog breeds such as Chihuahua and Yorkie, so our sizes are much smaller than other common pet brands.Warm Tips? 1, Dog may feel upset and don?t walk when wearing clothes at the first time, it is necessary to encourage and give them enough time to relax. It is better to try a thin clothes such as shirt at the first time?that will help them to adapt more quickly. 2, If your dog is a puppy and still growing, the right size may become small soon, please consider this before shopping.About Lophipets Lophipets is a new brand in dog clothes field. All our dog clothes are just made for puppies small dogs, such as Chihuahua, Yorkshire terrier. Small dogs are afraid of the cold. A garment is not only a beautiful dress but also a warm protector. We care about their sensitive skin, all our dog clothes don't build up static in cold and dry, protect dogs from itch..