Size Weight Chest Neck
XXS 2-3kg 24-38cm 23-37cm
XS 3-5kg 29-48cm 27-46cm
S 5-10kg 37-60cm 34-56cm
M 10-19kg 45-73cm 41-68cm
L 19-35kg 49-84cm 46-78cm
XL 35kg+ 56-97cm 52-90cm