Please refer to sizing chart to determine which size works for you.
CL's Advice: I wear a Small in Stanley and Skivvy t-shirts, and usually Medium in mfsc button shirts. I opted for a size Small in the GI shirt, with a snug initial fit that loosened-up gradually while wearing the shirt. After a day of normal wear, the shirt’s body expands a few inches in width, minimally in length. If the pattern has been specifically adjusted to avoid an unattractive “boxy” silhouette, a Small in the AM feels somewhat like a Medium in the PM.
If you are in-between sizes, or worried about an overly-relaxed fit, we recommend sizing down on the GI shirt. As always, which size will work for you depends on your own aesthetics, body type, preference for ‘vintage’ silhouette or contemporary fit.