Upon opening the bag I questioned the authenticity of this shirt as genuine NIKE. The weave is very loose and so easy to see through. Thinking I was just being skeptical I grabbed two other Legend shirts (1.5yrs old) and the weave is super tight.  Last night NBC ran a segment on counterfeit items on site like Amazon, eBay, etc talking about what to look for in determining if its real or fake. The retail paper tag looks good, the screened logo and size info looks good, but the sizing is OFF as many others have commented on. I have worn a NIKE XXL for two decades and this was the smallest shirt ever. Specifically the opening at the bottom of the shirt is very small, as was the chest. I held up this new shirt to compare it to 2 other Legend shirts and it was about 1.5 inches smaller in the chest.  IMHO, I believe this is a fake shirt. OR, this seller is buying a product of lesser quality. I am returning this shirt and will buy from Nike or my local Dicks.