How to Choose Base Layers

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Spring skiing or summer camping? The year-round Smartwool Merino 150 Pattern long-sleeve base layer top is game for either, thanks to the body temperature-regulating and no-stink properties of merino.
Shop similar products| Best Use | Multisport |
|---|---|
| Shirt Type | T-shirt |
| Fabric | 87% merino wool/13% nylon |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Lightweight |
| Sleeve Length | Long Sleeve |
| Gender | Men's |
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This shirt is great quality, but it's cut so short that I can't tuck it in while wearing it, which isn't ideal when out in the elements. I'd really like this exact shirt with an extra two inches.
Smartwool base layer shirts are among my favorite winter wear. I live high in the Rockies and love to be outdoors. I hike all winter, even when it is only 10 degrees outside. With smart wool base layer shirts I can layer up with sweaters and shirts for a hike and stay totally warm. And they look good enough that I can wear them when I'm in a coffee shop after a hike or just on a cold winter day when I am out and about. I love the color of this shire and the fit and feel of it.
I wear nothing but Merino Wool tops. Either Smart Wool or Ice Breaker. The shirt is a little clingy so it always looks wrinkled. That’s not an issue to Me but,may be for others. It’s grey, not striped, unless you look real close. Biggest issue with SmartWool is lack of creativity with their colors and they tend to snag much easier than IceBreaker. I have both and that’s been my experience.
I've used this a lot since buying it, and I'm very pleased with it. It's just the right weight for our 30 and 40 degree days, and it doesn't smell after getting it sweaty (my synthetic tops do). It doesn't feel real real substantial, but I only use it as a base layer, and I'm careful how I wash it. With care I expect it will last a long time.
Way overpriced and not durable. Runs and tears in just over a year.
The shirt is incredibly comfortable. However, after wearing it a few times around town, the bottom hem completely unraveled during its first 2 day camping trip. For the price of this shirt, it should hold up a lot better. I mended the hem, but couldn’t find the right color thread, and the material was hard to work with on my sewing machine, and now it’s ugly. I can still camp in it, but was planning on using it for casual wear as well. I won’t be buying another smart wool shirt. Great material, poor quality workmanship.
Runs big but that’s a good thing. I usually order tall sizes but this shirt is long enough to tuck in. It’s fitted nicely in arms and shoulders but stretchy enough for my thick waist. Soft and not scratchy material that washes well and is durable. Perfect breathable next to skin layer for my active life.
Much larger neck opening than other Smartwool base layer tops. Photo accurately depicts this. If that works for you, this is a high-quality lightweight base layer which could also be worn on its own.
I know crop tops have come back in style, but still not a good look for men. Try it on before you buy it.
Used on freezing nights on Mount Kilimanjaro for sleeping in my 0 degree bag; shirt is very comfortable and breathable, a very nice base layer. I did not use it as my primary base layer for climbing as I used a cold gear performance base but this is a good mid-weight base layer shirt.