These is a comfortable and breathable shirt. I have largely worn it casually, as it is not as comfortable or sweat wicking as other hiking shirts I have (e.g., Prana). Great design, but does run a bit large (not a slim fit).

Very comfortable shirt. Handles sweat well. The material of the shirt is little heavier than I expected, but doesn't feel that way when worn.

Shirt is great and fits really well. The only thing I was a little surprised about was the shirt was a little thicker than I thought it would be. It has great SPF protection and is very breathable, was just used to some of their other shirts.

Very comfortable, light weight, nice fitting shirt. Runs a little large. I'm a skinny 6'/30" waist and the ended up going with a SM after first ordering a MD. It can be difficult as a very slim person to find these shirts that don't billow out and look weird but this fit me really well. Shirt is great for anything: Hiking, casual day trip, work shirt. I am really pleased with it.

Really like it
the size is a little bigger than expected.

This is such a great shirt and our son was disappointed that it was too big for him. Lightweight fabric and clean simple styling.

I have several of Marmot's shirts. Sit well on shoulders.
Comfortable for outdoor work and sophisticated enough for a lunch date.

What more can you ask for? This is an amazing shirt, probably one of the most versatile you will find...hiking, casual night on the town, office business casual, commuter cycling...all check! Love the material feel on the skin, akin to the best merino wool, but it is different. Dries fast, and so far no funk smell. It does seem to breathe well, but I can't be 100% definitive on that just yet. Sizing wise, I think it's true to size. I am 5' 8", 35 in waist, and 46 in chest. Med fits well, slightly tight in the chest. I also ordered a Large, it too fits ok, slightly big. I kept both. If you are a weight lifter, go for the L, otherwise the Med is the way to go.

runs gigantic even compared to their regular t-shirts. nice shirt, lightweight material, but the size is so far off - I'm always a L in Marmot and in some brands an XL, but I'd bet a medium would fit better in this shirt

Got two of these. Love the color and the fabric is very soft and comfortable. I got smalls and they were pretty huge. 5'9", 145 lbs. 38-39 chest.
Was really looking forward to wearing these but the length, the sleeves and the chest on the size small is at least a medium, maybe a large size in some other brands. Had to return them. Otherwise , if you can make them fit I'm sure it'd be a great shirt.

I do have a bias towards marmot shirts, they keep making quality shirts in good colors and I keep liking them. Nice light shirt for camping or most anything else outdoors.

Great material, soft, durable but lightweight. The only reason I give it a four is it's a little wider around the body than I'd like. Less of a slim athletic fit like you'd get with Arc'teryx, so it looks a little bigger on me. Still a rad shirt, though.

Big fan of the material they use in this shirt. Fits great and has held up to lots of cycles through the wash.

Really good style and comfortable.

Great for hiking, bbqing, travels well and feels great. I feel like the XL is a bit large for me, but not too big to size.

This shirt is super comfortable, light weight, & looks great. What's not to love? After one wear, this is my new favorite shirt. I wasn't so sure about the polysonic rayon, but now I like it.

I love the fabric of this shirt it keeps you nice and cool while out in the sun. It feels great and looks even better. Nice shirt overall.

Looks good, fits true to size. The non-cotton material means river or hotel sink wash will work as it will dry quickly and any wrinkles fall out. The marmot branding (small tag) is very subtle so its not obnoxious or obvious like some competitors (TNF, Patagucci come to mind).

This shirt has an awesome feel to it. Very soft to the touch. The length is perfect for wearing it untucked(I'm short too). Don't wear an undershirt. I Dare YOU. 5'6" 160lbs. Size small.

I am 5'8" 190 lbs and athletic frame and a large fits nicely.

Make sure you purchase on sale