The Idepet Dog Clothes Dog Sweaters are made of high-quality materials that are designed to keep your pets warm and comfortable. The sweaters are available in four different sizes to fit any type of dog. The back length is 5.9″ and the neck size is 11.8 inches. The chest size is 13.3″ for large dogs and 18.9″ for small dogs. The weight limit is 1.5 pounds.