Size selection: Please select the size according to the length of the body and chest.
Size Chart:
XXS: Length: Approx.11.8";Chest Circumference: 17.7-19.7"; Recommended weight: 8.8-15 lb
XS: Length: Approx.13.8";Chest Circumference: 19.7-23.6"; Recommended weight: 15-22 lb
S: Length: Approx.15.7"; Chest Circumference: 22.4-26.4"; Recommended weight: 22-30 lb
M: Length: Approx.17.7";Chest Circumference: 26.8-30.7"; Recommended weight: 30-39 lb
L: Length: Approx.19.7"; Chest Circumference: 29.5-33.5"; Recommended weight: 39-49 lb
XL: Length: Approx.21.7"; Chest Circumference: 31.5-35.4"; Recommended weight: 49-60 lb
2XL: Length: Approx. 23.6";Chest Circumference: 33.5-37.4"; Recommended weight: 60-77 lb
3XL: Length: Approx. 27.6";Chest Circumference: 41.3-45.3"; Recommended weight: 77-99 lb