Pre-owned; 
-- vintage, made in the USA, single-stitch, cotton
-- most likely was originally a navy blue color... now has a nice fade
-- small hole in the front (pics #22 & 23)
-- wear and discoloration at neckline
-- consistent fade to the graphic
Please see photos for condition. Do not go by tagged size alone as brands fit differently, and the previous care of used clothing can affect the size and fit. Compare the given measurements with a comfortable-fitting, like item of your own to confirm the size. Measurements are taken flat-lay with a rigid measure so they are approximate. 

Chest, pit-to-pit:  24.5 inches
Length:   30 inches