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 35/13.5 Neck circumference37/14.5
XL Chest circumference55/21.5 Back length 40/15.5 Neck circumference41/16
weight：20/26/30/35/40g
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