New Without Tags Brooks Brothers Black Fleece White Black Green Check Oxford Cloth Button Down Collar Shirt. Compare to a properly fitting shirt to predict fit.  Black Fleece is a slim fitting line designed by Thom Browne.  Retail $225.

Approximate measurements as follows:

Size

BB00 14.25-32, and 19 inches across chest at armpit level.
BB0  15-32.75, and 20 inches across chest at armpit level.

BB1  15-34, and 20.5 inches across chest at armpit level.

BB2  15.75-34.5,  22

BB3  16.5-35, 22.75

    
US and International Buyers:  I can fit two or three shirts or other small items into a USPS Padded Flat Rate Envelope.  I will combine shipping and refund the lower shipping costs.  Two pairs of pants will also fit. So mix and match.