There's no size tag, but the chest measurement suggests an L or maybe an XL, depending on how you like your fit. Please check the measurements against a similar garment that fits you perfectly. Here are the approximate measurements:
Shoulder to shoulder: 17""
Armpit to armpit: 24"
Bottom of collar to hem: 32.5"
Shoulder seam to cuff: 22”
Center collar to cuff: 30/31"