Size XS ( Back Length: 19cm/7.5inch， Neck: 21cm/8.3inch， Chest: 29cm/11.4inch)Size S ( Back Length: 23cm/9.1inch， Neck: 23cm/9.1inch， Chest: 35cm/13.8inch)Size M ( Back Length: 27cm/10.6inch， Neck: 27cm/10.6inch， Chest: 41cm/16.1inch)Size L ( Back Length: 31cm/12.2inch， Neck: 31cm/12.2inch， Chest: 47cm/28.5inch)Size XL ( Back Length: 37cm/14.6inch， Neck: 35cm/13.8inch， Chest: 53cm/20.9inch)Material: Cotton + PolyesterPackage Include: 1PC Pet ClothesNOTE:It is manual measurement， there may be 1-2cm error.