Description of Spyder Armament Cotton/Poly T-Neck Jersey - Men's:
Because tight, synthetic baselayer tops look mad lame in the bar, Spyder made the Armament T-Neck Jersey. The Armament has polyester wicking fibers woven into its comfy cotton base, so you wear it while you “ski freeride” and you don’t die from clammy hypothermia. Then afterwards, you take it to the après scene and dominate. It’s a simple plan.
I am 5'7" 175lbs. I ordered a large and the shirt was super tight. I would recommend getting at least one size larger than normal, unless you have the body and are proud to show off every curve.
The purpose of this shirt is to wick away your perspiration. That's why it's tight--I purchased a similar shirt of another brand and it, too, fit like Spandex. If like many of us, you haven't got a torso you feel comfortable showing off in public, wear a sweater. Tight fit equals good wicking.