Free 2-Day Shipping on Orders Over $50

Detail Images

  • Smartwool - On-Model Front
  • Smartwool - NTS Mid 250 Pattern Zip Top - Men's - Deep Navy/Winter White
  • Smartwool - On-Model Front -

Current Color

  • Smartwool - NTS Mid 250 Pattern Zip Top - Men's - Deep Navy/Winter White

Smartwool NTS Mid 250 Pattern Zip Top - Men's


Free 2-Day shipping on orders over $50. Learn More

Select a Size:

Select options
  • Select options
    • S
    • XL
    • XXL

    Select a Color:

    Select options
  • Select options
    • Deep Navy/Winter White

    10 Reviews


    Stay comfortable in the chill.

    If you do lots of running in chilly temperatures or just need a midweight baselayer for tearing up the slopes, the Smartwool Merino 250 Pattern 1/4-Zip Baselayer is a winner. Made of 100% merino wool, which is renowned for it's temperature-regulating, odor-controlling, and moisture-transferring capabilities, the Mid 250 has a 1/4-length zip to help you warm up or cool down. It also sports flatlock seams for chafe-free comfort.

    • Merino wool
    • Flatlock seams
    • 1/4-zip neck
    • Shoulder panels
    • Moisture wicking and anti-odor
    • Item #SWL00GG

    Tech Specs

    merino wool
    Insulation Weight
    natural attribute of merino wool
    UPF Rating
    Recommended Use
    skiing, snowboarding, hiking, running
    Manufacturer Warranty
    2 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Like it a lot

    • Familiarity: I've used it once or twice and have initial impressions

    I purchased this item on size small; I am 5'6" tall and weight of 143 pounds. I used it the entire last weekend with nothing else on top of it at around 48 degrees Fahrenheit; I was not super warm but I was not too cold either. Nice contoured shape; not too tight or loose. I recommend it.

    Wanted to love it...I hate it

    • Familiarity: I've used it several times
    • Fit: Runs large
    • Size Bought: Large
    • Height: 6'0"
    • Weight: 200lbs

    I wanted so bad for this piece to rock...mine doesn't. I'm 6'0 200 pounds and I tend to fill shirts out very easily. When I first tried this piece in large it seemed to fit great, generally "next to skin" in all areas and looks as advertised in the picture. After a couple uses it started to stretch out, and never returned to form. It's now extremely baggy and in my opinion retains way to much weight when wet. After barely using this POS I'm now shopping for another baselayer. My branded 195 layer that costs me 25 bucks on sale is far superior to this overpriced junk. Would be great if NTS actually meant next to skin. What a waste of money.

    i've bought about 3 more

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: XL
    • Height: 6'2"
    • Weight: 215lbs

    love it. great baselayer, love the half zip in case i overheat. wear these running or hiking

    Smartwool lives up to claims

      Out of curiosity and in an effort to test the technology, I have worn my mid-weight 1/4 zip top for 20+ ski days dating back to January 2 WITHOUT washing. After skiing, I simply hung it on a hanger on my closet door to let it air and dry. I wanted to see how many times I could wear it before it became smelly. I am happy to report--it still smells fine (I did wear antiperspirant/deodorant each ski day), and it is still very comfortable to wear. It got a little salty while skiing in Spring-like temps at Snowbird in early March, but it smells fine and feels soft. Love my Smartwool.

      Smartwool lives up to claims

      SmartWool as usual - awesome!

      • Familiarity: I've used it several times
      • Fit: True to size
      • Size Bought: Small
      • Height: 5'8"
      • Weight: 150lbs

      I have found SW tops/bottoms to breath and wick moisture very well - better than Icebreaker, so I will prob not purchase anymore IB and stick with SW. Sleeves on this shirt were a little long for me, but no big deal. Super soft and comfy, great weight/warmth as a base layer with no mid layer under my soft shell jacket hiking in 35-55F temps!

      Super Cozy

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

      I have both the top and bottom and they are the go to for any cold weather activity. They fit like a dream, pull away the sweat before I feel it and fit seamlessly below my other layers. The top is a bit long, but it tucks nicely below my ski pants so I don't get any draft. I saw another review where someone had had a problem after washing their shirt. I use sport wash and air dry all my outdoor gear flat and I've never had a problem.

      Not good

      • Familiarity: I've used it several times
      • Fit: Runs small
      • Size Bought: L
      • Height: 6'4"
      • Weight: 190lbs

      It's good only when new. After washing and drying looks like a bag. It lost all shape. Money wasted. It also shrunk and now it a waste.

      It's second smart wool product that sucks bad.


      Shirt of All Trades

      • Fit: True to size

      I recently purchased this for my father for his birthday and immediately had several more requested. He wore it hiking every day for a week and still didn't have anyone not sit next to him in the car. He was warm in the cold mornings when we set off, but stayed dry when the going got tougher.