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Throw on the Smartwool Men's NTS Lightweight Crew before you head out to get your sweat on. Merino wool fabric rides comfortably, pulls moisture from your skin, and breathes easily, while the sculpted side panel eliminates the side seam to reduce chafing and enhance the fit.

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New Fav. Brand

  • Familiarity:I've used it several times
  • Fit:True to size
  • Size Bought: Medium

Love this shirt. Fit is absolutely perfect for me at 5'8", 165 with an athletic build. The lightweight elastic band at the end of the sleeves are perfect. Now one of my preferred brands for baselayers.

Nice Lightweight Baselayer

  • Familiarity:I've used it several times
  • Fit:True to size

I have one of these for those random shoulder season activities that might get a little chilly. I have been using this mountain biking in 50 F temps. Its just enough to keep the chill of me, but not thick enough to cause any overheating when high activity.

Good Item But Not Comfortable

  • Familiarity:I've used it once or twice and have initial impressions
  • Fit:True to size
  • Size Bought: M

I donot think it can use as baselayer if your skin is sensitive.I just try it but feel very uncomfortable and itch. I will use it as normal wool cloth.
Maybe people live in cold weather feel nothing about the itch....

Best Baselayer!!!

  • Familiarity:I've put it through the wringer
  • Fit:True to size
  • Size Bought: medium

As described! no itch, wears light on skin and temp control is superb. can be worn as solo layer at higher elevation camping in the summer... Size M , 5'10'' , 160#

Smart wool!!

  • Familiarity:I've put it through the wringer
  • Fit:True to size
  • Size Bought: Ex large

Have used smart wool extensively the past 3 years from elk hunting in -22 degrees to chilly mornings fishing in Alaska! Comfort, fit, warmth and wicking features are great!

Just Right!

    After reading reviews for the medium weight version, it seemed like the lightweight might be a better choice for me in north Alabama. It turns out to have been a great decision.

    I followed the chart for sizing, and am very happy with the way the crew fits. Plenty long enough for my 38" arms, and a lot of waist to stay tucked in.

    In the upper 20s, which is a cold spell here, it served as a great underlayer while I hiked in the cold predawn to a photo shoot. That, a lightweight flannel shirt and a windbreaker, and my upper body stayed warm, even a little hot at times. Perfect!

    After several washings, I notice no shrinkage. Plus, like all SmartWool, it feels great. I'm a believer!

    Curious about the redesign. I have several...

    Curious about the redesign. I have several of these from previous years, just wondering how it compares as far as fit. The sleeves look a little strange in the pictures. Any help is much appreciated.

    Best Answer

    Smartwool did an entire re-design of Lt Wt for this fall. The sleeves you mentioned are a bit longer, offering more coverage on the outside of the hand. It has a similar feel as a garment with thumbholes but without the hole. The cut it also a bit longer in the body. Smartwool combined two fabrics on the new light weight, a ribbed material under the arms that allow more freedom of movement and their jersey knit for the rest. I think you will be very happy with the updates. When you first put it on you can't help but think how well thought out the design is.