Gentleman Gerry ShirtThe Genleman Gerry Shirt features a charming, quirky print and comfortable, soft, stretch fabric, Size Guide Size Chest Girth (cm) Length (cm) Weight Guide XXS 38 24 2 3. 8kg XS 43 28 3. 5 4. 5kg S 48 32 4. 5 7. 5kg M 54 37 7. 5 10kg L 56 42 9. 5 15kg If you are between sizes it is best to take the size up, for example your pups chest measurement is 44cm you would select size S. These tops are stretchy so have a few cms give if needed. Material: 95%