Size X-Small：Height 5.1 inches, Chest Circumference 12~16 inches ，Neck length 9.4 inches, Back length 7.5 inches,
Size small: Height 5.5 inches, Chest Circumference 15~17 inches ，Neck length 11 inches, Back length 9.4 inches,
Size medium: Height 6.7 inches, Chest Circumference 17~19inches，Neck length 12.6 inches, Back length 11 inches,
Size Large: Height 7.5 inches, Chest Circumference 19~21 inches ，Neck length 15 inches, Back length 13.4 inches,
Size X-Large: Height 8.3 inches, Chest Circumference 23~26 inches，Neck length 16.5 inches, Back length 14.6 inches,
How to choose the size？
1, It is recommended that you measure your dog's chest circumference and the standing height and neck circumference. chest circumference is the perimeter of the widest of dogs chest. the standing height is from your dog foot to your dog neck.
2, The pet costumes is a standing clothing，please mainly consider the chest circumference and neck circumference and standing height. and back length is the auxiliary factor.
3, Your baby usually wears size S doesn't mean all size S will fit him/her.
4，If any of the measurements are 'between' two sizes, choose the larger size
5, Remind you note: pet clothing chest circumference should be greater than the actual chest circumference of dog, it is convenient for its activities. Please consider 0.5 inch error.