Men's US Size Chart (Jacket Size)

Medium 42"
Large 46"
X-Large 50"
XX-Large 54"
Standard/One-Size Fits up to a men's large

Men's - International Size Chart
(Jacket Size)

Size UK EUR
Medium 42 52
Large 46 56
X-Large 50 60
XX-Large 54 64
Standard/One-Size Fits up to a men's large