Size: XS Back Length 18 Chest Circumference 27-32 Neck Circumference 26 Recommended Weight 1-2kg 

Size: S Back Length 22 Chest Circumference 31-37 Neck Circumference 30 Recommended Weight 1.5-3kg 

Size: M Back length 26 Chest circumference 36-42 Neck circumference 35 Recommended weight 3-5kg 

Size: L Back Length 32 Chest Circumference 41-47 Neck Circumference 38 Recommended Weight 5-7.5kg 

Size: XL Back length 36 Chest circumference 46-52 Neck circumference 42 Recommended weight 7.5-11kg 

Size: XXL Back length 40 Chest circumference 51-57 Neck circumference 46 Recommended weight 11-13kg