SmartWool Microweight Longsleeve Crew

Priced: $39.98 - $80.00 Rated:   - 5 stars out of 5 by 10 reviews.
SmartWool Microweight Longsleeve Crew
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SmartWool Microweight Longsleeve Crew -
An ideal long-sleeve baselayer option for year-round use, the Microweight Crew from SmartWool is lightweight, unassuming, and also works well as a stand-alone top in mild temps.


  • Fine merino wool helps maintain a comfortable temperature whether the day is hot, cold or in between
  • Shaped bottom hem enhances fit
  • Fabric protects skin from harsh UV light with a UPF rating of 25
  • Stripe tape binding at back neck and contrast color internal stitching detail
  • Unlike traditional wool, SmartWool items do not itch and can be repeatedly washed and dried without shrinking


  • The formfitting SmartWool Microweight long-sleeve crew for men offers a minimalist fit
  • Form Fit

Weather and Wind:

  • Chafe-free flatlock seams enhance comfort


  • Crew neck with set-in long sleeves
  • Heat transfer logo at left sleeve cuff


  • Jersey Knit; UPF 30

The SmartWool Microweight Crew shirt for men will win you over with its soft touch.


Need a long, but not heavy, sleeve? Sure to be your grab-and-go-item, Smartwool's Microweight Crew will perfectly transition you through the seasons. Madeof 100% Merino wool.

ProLite Gear
Great as a baselayer in cooler conditions, or by itself when it heats up. Made from Smartwool's lightest NTS fabric, this crew was designed with flatlock seam construction to eliminate chafing.
Need a long, but not heavy, sleeve? Sure to be your grab-and-go-item, this crew will perfectly transition you through the seasons. Made in Vietnam of New Zealand Zque Merino wool.
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Average Price History: Price History
Review RatingNumber of Reviews
Clothing Fit:Trim Fit
Country of Origin:Vietnam
Fabric:Wool / wool blend
Fabric Weight:Microweight
Fabrics/Materials:100% Merino wool
Material:100% Merino Wool
Material Family:Wool
Moisture wicking:Yes
Quick drying:No
Shirt style:Crew
Sleeve length:Long sleeve
Sun-protective fabric:Yes
Type:Long Sleeve
Underwear weight:Lightweight
Weight:6.35 oz / 180 g
Compare specifications to related products.

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Subcategories of Fleece & Base Layers:

SmartWool Microweight Longsleeve Crew Reviews:

Positive Reviews:

Smart is an understatement

I bought this shirt prior to hiking the Presidential Traverse in the White Mountains. It kept me at a comfortable temperature whether the weather was moderate or chilly with a head wind. I was extremely impressed with how comfortable the shirt was to wear. What impressed me the most was how it retained my body heat even though it is not bulky.
Morale at REI on 08/08/2013

Vastly Superior

It's about time someone came out with a product that truly uses wool to it's potential. Fantastic insulation with absolutely no itch. All the companies out there making thermals with synthetic fibers cannot top this. I have three of these and wear them every day of the pacific northwest winter-and some early summer mornings and late evenings too!
JMCuyler at REI on 01/01/2013

Great product

These are great thermals. Nothing better for the outdoors. If your moving the micro weight is perfect. It will keep you dry, and warm. I went the cheap way and got the orange. I do a lot of hiking, so it's not a fashion contest, and it might keep me from getting shot at.
Bubba T. at Mountain Gear on 11/11/2010

Excellent shirts...

I found one of these shirts at an outlet a few years ago and picked it up for cheap. I've since purchased a couple more because I fell in love instantly. Extremely comfortable, naturally stink-resistant, and not so thick that you get hot easily. Works fantastic as a base layer.
InnocentCrook at REI on 09/09/2012

Warm and comfortable

Picked this up as a base layer for winter bike commuting. So far, this has kept me plenty warm when I added this to my previous commute gear. There was a point where I thought I was a little too warm. Definitely happy I added this.
Worldwithin at REI on 10/10/2013

I will buy this product again.

This a workhorse piece of clothing. It's light weight wool that is soft to the touch. The fit is true to the size chart. I wear it for days at a time and it's probably my favorite shirt.
Spumoni at Mountain Gear on 11/11/2013

Very comfortable, surprisingly warm!

Bought this for use as part of my warmer weather layering and totally love it. It's remarkably warm for the weight, dries extremely fast and is super comfortable for all day wear.
alpineaddiction at REI on 05/05/2012

Great light weigh long long sleeve shirt

I purchased this for a Kenya safari where it never got hot but was always cool in the evening. Turned out to be perfect.
SSD at REI on 09/09/2013

It fit!

The shirt will be worn the most during hunting season, in the back country.
piano player at REI on 09/09/2012

Negative Reviews:

Great feel but not durable

I'm a big Smartwool fan so I was really disappointed with low quality of this shirt. It feels great and looks great, but threads began to unravel on one wrist and there are now two small holes, one at the back of neck and the other in the middle of the back. I did not tear or abuse the shirt. They look as if moth ate them but this shirt is barely a month old!
grounder at REI on 06/06/2012