I first found out about these when I had to wear one with our company's logo for work. I fell in love with it, and looked it up on Amazon to buy some regular ones for my personal use.These are super comfortable. They're a nice "comfortable but professional" look that you can wear with jeans or cargo shorts, and not feel too dressed up or too casual. I'm comfortable wearing this every day, whether its running errands or going to church. Best of all, the collar doesn't get those permanent creases normal polos are prone to.These do run a size or so larger than normal. I find that XL clothes vary a lot, from too small (especially if things shrink in the wash), to just right, to a little too big. These are big enough that I could probably get away with a size large, but I haven't tried it yet. One thing I appreciate is that the fabric is soft enough that it's not too baggy. So even if its a bit too big, it doesn't have "potato sack" look that a lot of shirts have. Personally, I like polo shirts to be a little on the big side, because they look a little more casual, and I have more freedom of movement without the risk of exposing my belly button or the arms riding up into my armpits.