size：XS Chest circumference35/13.5  Back length 20/75 Neck circumference25/9.8 S Chest circumference40/15.5  Back length 25/9.8 Neck circumference29/11.4 M Chest circumference45/17.72  Back length 30/11.81 Neck circumference33/12.8 L Chest circumference50/19.5  Back length...