SIZE CHEST SLEEVE FRONT LENGTH BACK LENGTH
SMALL 42" 8.75" 27.5" 28.5"
MEDIUM 44" 9.25" 27.5" 28.5"
LARGE 46" 9.75" 28" 29"
X-LARGE 48" 10.25" 29" 30"

 

Measurement taken from Knickbocker Mfg. Co. official website