I have one of these in every available color. I'm an extreme outdoors enthusiast, and these shirts can be worn for that (dry quickly, wrinkles easily taken out, look great), but better for everyday use. Whether its mid summer or mid winter, these shirts are super comfortable, look great on the town or in the woods, and if treated properly, last forever! The best way to take care of these is to wash cold, then let hang dry (iron, if you have to... inside out). Can role the sleeves up as well. I've worn these hiking, when they were fantastically comfortable and moisture wicking, and i've worn them on vacation in the cold weather of Newport RI, and heat of the Florida coast. They don't shrink, so order your exact size (as long as you wash in cold water... VERY slightly shrink with hot). The biggest downfall of these shirts, is that they are SO nice, I can't bring myself to wear them on the trail until they're old. Also, unless you follow washing instructions (and you dry them alot), they will start to wear quickly (only lasting a year or two)! Gosh forbid! Enjoy the shirts, I do! There are many more colors available through many different outlets, so look for the best colors for yourself. I enjoyed the dark blue, gray, black, pinot' red (there are three or more colors of red), and moonlight (which is a bone white kind of color). Another problem with these shirts, is you can't get enough of them! As for the other guy's question, you CAN wear them in, or out, look good either way. I can wear a small if I wanted to, but choose the medium (which is only slightly larger), and after one warm wash (which your not supposed to do), it fit's perfect (whereas, the large is REALLY large, and doesn't shrink at all!)! The colors last forever on these as well! By the time it's ready for the junk heap, it is still the color it was when you bought it. I then cut my last one up, and used it to wax the car (better material then any chamois material)! Never run out of use for these shirts! Warm at night, cool wicking material for day (the only time i've been too warm, was on day's--in town's--when it was around 80+ degrees). Other than that, if your hiking in those temps, sweat won't bother you, because it will be wick'ed away! I can only hope this answers most peoples questions, and that you all enjoy the shirt!