There is no way the shirts I received were one size smaller as described in the product description. The shirt is 2 size smaller than advertised. Every shirt I own (50 plus shirts) is 2XL and when the 3 that I ordered here came in, I tried 2, it was more of a large, super tight and not wearable. I It took 3 days to actually ship my shirts and I didn't get my shirt until a week later so that means being a prime member does not mean anything-also this is supposed to be a prime item too. I really want to order a 3Xl but another customer said that his 3XL was too large. I am going to send this crap back in. I do however feel that if it was true to size it would be an awesome shirt to wear.