About NACOCO Brand: Love Pets, Love Life! NACOCO is a professional enterprise selling pet daily suppies. We also have creative designers and pattern maker who created new product which meet the needs of the customers. NACOCO always keep the pets fashion is a kind of catalyst to make life more colorful. Please choose a right size and leave some room to wear before you buy. Your dog would be more comfortable when you buy a suitable sweater. Size Chart Size XS: Back Length: 7.5", Chest Girth: 13.4", Neck Girth: 11.4". Size S: Back Length: 9.1", Chest Girth: 15.4", Neck Girth: 12.6". Size M: Back Length: 11.0", Chest Girth: 17.3", Neck Girth: 13.4". Size L: Back Length: 12.6", Chest Girth: 19.3", Neck Girth: 15.0". Size XL: Back Length: 14.2", Chest Girth: 21.3", Neck Girth: 15.7". Size 2XL: Back Length: 15.8", Chest Girth: 23.3", Neck Girth: 16.9". Size 3XL: Back Length: 17.4", Chest Girth: 25.3", Neck Girth: 18.4". Pay attention Please measure the Back length, neck girth and neck girth of your dog to choice a best size, and you need leave some room to wear clothes. You would better choice the larger one if you are confusing which size you need to buy between two sizes. Dog Funny Costume Dog Cctopus Costume Dog Spider Costume Dog Dinosaur Costume Dog Doctor Costume Dog Shark Costume Small Dogs ✓ ✓ ✓ ✓ Medium Dogs ✓ ✓ ✓ ✓ ✓ Large Dogs ✓ ✓ Cats ✓ ✓ ✓