Smartwool  Classic All-Season Merino Base Layer T-Shirt - Men's

The Good: Amazing shirt. I wore it on a few hikes so far and it's very comfortable. I sweat a lot and the moisture wicking has been fantastic. It drys quickly and I was comfortable in just that shirt hiking from 39 degrees up to 60 degrees so far. (As a Wim How guy) Also, being merino it doesn't stink. I sweat in it and wore it a few times in the mountains and it didn't stink at all. The Bad: It started to pill after the first wash. I followed the instructions and hung it up to dry (no dryer) so I'm concerned with how it will hold up over time. Honestly I don't know and it might be fine but when you pay $75 for a t-shirt (sorry Macklemore) the picky side kicks in.

All weather bike commuter in need of another base layer (can one actually have enough?). Loved my lighter smart wool t-shirt, so decided that another couldn’t be so bad, right? “Right!” my torso loudly exclaims. Fitted for comfort, long enough to protect one’s cycle-position modesty, and just thick enough to provide essential base layer temp regulation. Even in sub-freezing weather, I simply use this layer, a fitted yak wool sweater, and a workshirt-like wind jacket, and I’m good-to-go. But, wait, there’s more! This actually makes an amazing warm weather shirt too. Merino wool is the all weather go-to fabric. Highly recommend this particular fit.

Comfortable, insulating, yet also not hot. Doesn't absorb odors. Cleans up well. I used mine all week as a boat shirt on a recent St Croix dive trip. I've used cotton and polypro shirts for this application in some prior dive trips. Ocean water makes them stink by the end of the week of diving. (I don't know what it is about seawater that has that effect - it just does). But his shirt didn't stink at the end of the week. The shirt also cleaned up nicely once laundered it back home in Colorado. I will buy again.

My husband bought the blue one on a whim. He was not sure what it would be like for running, as he mainly runs in synthetic fiber shirts. Let me tell you he won’t take it off. He loves this shirt so much he bought 3 more and wishes all his shirts were made from Smartwool, not just those for running. I am only writing this review because I feel if he can derive this much joy from a running shirt, others should know about this secret too. Ask yourself why would you deprive yourself from this joy? It’s like woven happiness for your runs.

[This review was collected as part of a promotion.] While this review is for a recent single garment purchase of a Smartwool tee in Natural, which is excellent btw, I'm going to go big and endorse the Smartwool brand in its entirety. Well, ok, for all the men's products I have bought from them over the years. I am a HUGE fan of their 150-250 gram merino wool products so much so that I have eliminated most cotton garments from my wardrobe. I appreciate that they have expanded the color options in recent years. I have underwear, joggers, long sleeve and short sleeve shirts, hats, etc, all excellent long-lasting quality. Since Smartwool's success, many competitors have appeared but I keep coming back to Smartwool. Five stars. #sweepstakes

This is a great shirt for a base layer or by itself as a t-shirt. The fabric is really nice looking and soft. I usually wear an XL but these seem to run a little large, so I got a Large and it fits perfect for a base layer: snug but not tight. Also the fabric has a decent amount of stretch to it, making it very comfortable. I will probably also get an XL to wear as a more relaxed fitting t-shirt to wear by itself.

[This review was collected as part of a promotion.] this is a great, lightweight merino wool layer that fits well under a flannel or hoodie/jacket, but also looks clean on its own. wearing one right now! i think the little bit of nylon (12%) knocks the benefits of merino down a few notches, but is still streets ahead of 100% nylon/polyester/etc. and i think the added durability outweighs the cons. i'll see how it performs on the trail, but so far so good for everyday wear! i'm 6'3", 190 lbs, and the Large is a good fit -- not skin-tight, not boxy. i'd prefer another inch or two in the length, but it's surprisingly OK as-is. my one gripe is that the sleeves are a little too wide, but maybe that's my cue to hit the gym... ;) thanks SmartWool! #sweepstakes

I got three different smartwool t-shirts. They are all wonderful, this one is a clear baselayer so it is slimmer fit. I still wear it as a regular tshirt sometimes but its probably pretty form fitting for anyone who has a really athletic build. I sized up and it still fits 'smaller' than the other two shirts. Its super lightweight but isn't super thin like some other merino t-shirts, so you actually feel like you're wearing a t-shirt. Neck is not too tight or too loose. Most importantly, its still got the quick dry/low odor capabilities of merino. If you tend to sweat, this shirt will evaporate more of it and will actually dry pretty quickly, whereas if you sweat in cotton you just have to change shirts.

I bought two of these shirts for travel and activities (hike/bike etc). The look and fit was very nice and I wanted to like the shirts. However, when I warmed up and started to get a little sweaty, the shirt felt very scratchy and itchy. The feeling went away when I cooled down, but came back as I warmed up. Maybe my skin is on the sensitive side. The anti-odor is true and it smells way less than a synthetic shirt after being worn a couple days. I wanted to like them, but I had to return because of the itchiness. I might try a wool blend instead.

Great fit. I love wearing this shirt under almost everything. You can wear it several times without washing, odor free!