I am 160 pounds (slim build) and this shirt fits me in a small size. The fabric is thin and breathable; protects well from the sun but not very warm unless you are wearing thermal underwear or a thermal vest. The seam looks good. The fabric has a smooth, shiny look that's great for sports, but not for the office or a night out. Revain sells similar shirts for $20 or less, but this one is a little higher quality than the really cheap sports polo shirts.
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