I bought this in an XL not knowing what to expect. I’m a tall guy, 6’5” 265lb, and I’m used to long sleeves being comically short at times. The sleeves were right where I would want them. The shirt fit how normal XL shirts fit. The sleeve openings stretch enough to pull them up a bit too. I do wish the neck had some stretch as well, but it doesn’t bother me while wearing it, just taking it on and off. The garment is very breathable and has a bit of sheen to it compared to cotton. Great shirt for disc golf.