Voberry Small Dog Shirt, Fashion Puppy Doggy Apparel Cotton Costumes Pet Dog Cat Funny Shirt T Shirt please compare the following size with your pet size before you choose them . Size XS: Back Length--21CM/8.27", Chest--31CM/12.20", Neck--16CM/6.30" Size S: Back Length--25CM/9.84", Chest-- 35CM/13.78", Neck-- 21CM/8.27" Size M: Back Length-- 28CM/11.02", Chest--46CM/18.11", Neck-- 30CM/11.81" Size L: Back Length-- 36CM/14.17", Chest--48CM/18.90", Neck-- 34CM/13.39"