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Women’s Midweight Stretch Baselayer Long Sleeve Shirt


https://www.columbia.com/womens-midweight-stretch-baselayer-long-sleeve-shirt-1639021.html 1639021
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Style# 1639021
Uses Winter


This wicking, performance fit top features ergonomic seaming, 4-way comfort stretch fabric, and a thermal reflecting liner.

  • Omni-Heat™ thermal reflective
  • Omni-Wick™
  • 4-way comfort stretch
  • Antimicrobial treatment protects this product from bacterial growth
  • Ergonomic seaming
  • Flatlocked construction
  • Center Back Length: 26"
  • Imported
  • Uses: Winter
  • Style# 1639021

  • 85% polyester / 15% elastane Omni-Heat™ Reflective Anytime Stretch Jersey
  • 85% polyester / 15% elastane stretch jersey Omni-Wick™ Anytime
Omni-Heat™ Reflective
Thermal Reflective Warmth
High-Performance Wicking Fabric

Technology Videos

Play youtube video about Omni-Heat Reflective (tm)
Omni-Heat™ Reflective
Magic in a littlesilver dot.
Breathable material with little silver dots that reflect body heat.
Play youtube video about Omni-Wick (tm)
Pulls moisture away from the body so sweat can evaporate quickly.


Women’s Midweight Stretch Baselayer Long Sleeve Shirt is rated 4.7 out of 5 by 26.
Rated 5 out of 5 by from We have several in my family. With the usual quality and cold protection
Date published: 2018-07-12
Rated 5 out of 5 by from Base Layer Omnitech It works so much when the wind so chill and make your body I dont have to worry anymore or wear to much jackets
Date published: 2018-07-10
Rated 5 out of 5 by from warm and comfy Kept my daughter warm skiing this winter.
Date published: 2018-05-19
Rated 5 out of 5 by from I love this shirt! This shirt has the perfect length so it doesn't ride up, and the sleeve length is great as well. This is my new go to!!
Date published: 2018-04-25
Rated 5 out of 5 by from Good first layer I have two of these, one medium & one large, and they both fit. They are form fitting & I wear them all the time as a first layer.
Date published: 2018-03-24
Rated 5 out of 5 by from Finally warm I ordered this shirt to stay warm while coaching track in Oregon, and I am finally warm enough. It was too warm for me while running with temperatures in the 50’s, but would be perfect on a really cold day.
Date published: 2018-03-22
Rated 5 out of 5 by from Great baselayer shirt I normally wear a size small. I own three colors of this shirt in medium and it fits me perfectly. Order a size up. I love this shirt. When I downhill ski, I wear this shirt, Columbia’s Omni heat vest and my ski coat and I am perfectly comfortable. Anything more than that and I end up removing layers and carrying them in my backpack. It breathes great. I’ve also worn this hiking and it’s fantastic. The only negative to this is that the material is “cold” when you first put it on. Once you warm up, it stays a very comfortable warm level.
Date published: 2018-03-12
Rated 5 out of 5 by from Just right Warm and a great fit
Date published: 2018-03-11
Rated 5 out of 5 by from Awesome Great base layer, stayed warm in cold weather
Date published: 2018-02-18
Rated 5 out of 5 by from Amazing product Excellent product. It kept me warm and I even sweated the temperature very low. I highly recommend this product. I bought everything with OMNI-HEAT to protect me (boots, balaclava, pants and blouse).
Date published: 2018-02-03
Rated 5 out of 5 by from Just what is needed in cold weather This base layer long sleeve shirt meets all my expectations. The material is soft and feels good against my skin. More important it keeps the warmth in and is perfect layer to wear when cycling outside in the winter.
Date published: 2018-01-29
Rated 5 out of 5 by from Long sleeve shirt I love this short very comfortable, nice color too.
Date published: 2018-01-22
Rated 4 out of 5 by from Nice Like it and fit well. Maybe could have been a little warmer but do the job well. (This review was collected as part of a promotion.)
Date published: 2017-12-29
Rated 5 out of 5 by from Warm and breathable I fell in love with Colombia's Omni Heat technology in the leggings. Needed a baselayer for a winter photography expedition in Iceland. First time for me to use a shirt in this material; as an older woman, hot flashes are an issue. Tested it out in -20C wind chill this week. Wore it under a light sweater, with a down coat. Walked about 1.5 km, then went inside in full gear. It was GREAT! It's breathable, so it didn't make me break a sweat but it also kept me nice 'n' cosy in that cold. Super comfortable, too. I ordered XL because I am muscular, but short; fits me like a L, which is exactly what I wanted, so perhaps it fits a little small. (This review was collected as part of a promotion.)
Date published: 2017-12-28
Rated 5 out of 5 by from warm and practical A nice, practical black top. Fit is great--snug without being tight--and sleeves and waist hit at a good length. Warm, soft, and light. This will be a go-to basic for a long time.
Date published: 2017-12-22
Rated 4 out of 5 by from Will keep you warm without the bulk I bought this shirt to use on hikes and long walks so I could stay warm and dry. I was able to wear this shirt with my outerwear company’s down sweater and it kept me warm in 40 degree weather without having to go up to a thicker down coat. The moisture wicking features worked very well too. The silver dots on the inside of the shirt help you retain your own body heat to a comfortable level without getting sweaty. It does run a whole size small. I normally wear a medium so the first shirt I bought was a medium in black. It does fit but it’s kind of tight under the arms and the arms themselves. If I keep it pulled down at my wrists, it helps from not binding at my armpits. The neck is also cut a little tight like another reviewer said. I loved the functionality of it so I ordered two more, one red and one blue but in Large this time. Large is perfect for my 34D frame. I normally wear a size 8 for reference. This alleviated the tight armpit situation and high neck, making it much more comfortable. It’s still very fitted but not tight.
Date published: 2017-12-21
Rated 5 out of 5 by from I love it! The base layer fits just perfect! I used it on Canada and was the best! Is really comfortable, not heavy at all.
Date published: 2017-12-15
Rated 5 out of 5 by from I never want to take this shirt off! This Omni-Heat base layer top has it all! It has just the right amount of compression without feeling tight and moves with me. It stays in place without bunching up. The design is flattering. The colors are vibrant. Best of all, it is WARM!!! It keeps me comfortably warm for all kinds of activities alone or with plain fleece jacket in 40-60 degree conditions. It's fantastic at lower temps with an insulated jacket. This shirt is so wonderful that I often "forget" to take it off when I'm back inside.
Date published: 2017-12-14
Rated 4 out of 5 by from Serves it's purpose! This is said to soak of the perspiration and keep in the heat, well it does exactly that. I would recommend this product.
Date published: 2017-10-12
Rated 5 out of 5 by from WOMEN’S MIDWEIGHT STRETCH BASELAYER LONG SLEEVE SHIRT Love these shirts in the winter I wear them under wool,turtle necked sweaters like alpaca, angora sweaters to keep me warm. I have anemia and a side effect is you are always cold. So the base layer plus a wool sweater keeps me warm at work. It works great. Someone said the neck line was high I didn't feel that was the case. I have one in red, black and just ordered one in blue. I normally wear a small in Columbia shirts etc but felt the medium was a perfect fit
Date published: 2017-09-26
Rated 5 out of 5 by from BASELAYER LONG SLEEVE SHIRT LOVE LOVE LOVE these long sleeve, I have the three colors and can't wait until they come up with other colors (This review was collected as part of a promotion.)
Date published: 2017-06-13
Rated 5 out of 5 by from My favorite top Great for fitness warmup or running outdoors without the bulkiness of other materials. It is very warm as the omniheat reflects your body heat back to you!
Date published: 2017-01-02
Rated 5 out of 5 by from Will keep you warm! I'm 5'4" with a small bone frame. I read the reviews, & instead if my usual Small, I order the Medium. It is body hugging, which that's what it's supposed to do. The arms are snug enough to not roll up when you're putting your next layer on, while still looking good enough to wear on its own. The tail is long enough to tuck in. As others have mentioned, the back of the neck is high, & it may bunch up &/or show under certain clothes. It may be an issue for some, but it doesn't bother me that much. I prefer to have the thumb holes, but they aren't necessary with this shirt. Since I've discovered Omni-heat, I've been quite the fan of it. I pretty much stay cold most of the year, even inside. My daughter loves it too! Like me, she's a big hockey fan, & she goes to games a lot, wearing her Columbia clothes. It's reasonably priced, & it keeps you warm without all the bulk.
Date published: 2016-02-26
Rated 4 out of 5 by from Great product, with one caveat I really liked this thermal shirt, but found it hit right on the base of my neck. Total panic-inducing no-go. But the rest of the shirt was a perfect fit - long overall length, long arms! What to do? Decided to put in a slightly gathered V stitch at the neck to pull it down just touch. Took care of the neck issue perfectly. Its now my favorite. And warm, to boot. Hope Columbia fixed just this neck piece when they roll out a new version.
Date published: 2016-02-10
Rated 4 out of 5 by from Comfy! If I could I'd wear this under everything, but the collar sits right at the base of the neck and most of my sweaters are crew neck and would show through. Still very great! I'm just waiting for the winter to kick in
Date published: 2015-12-14
Rated 3 out of 5 by from too small shirt looked and felt awesome except for pulling way too much in the underarms. Sent it back. If I find time I am going to order the bigger size.
Date published: 2015-12-06
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  • clientName_columbia

Size & Fit Guide

Size Chart

Size & Fit Guide
Women's Body Measurement (Inches)
Size XS
Bust 32-33 34-35 36-37.5 39-40.5 42-44.5
Waist 25.5-26.5 27.5-28.5 29.5-30.5 32-33.5 35.5-37.5
Hips 34.5-35.5 36.5-37.5 38.5-40 41.5-43 45-47
Size L
Bust 39-40.5 42-44.5
Waist 32-33.5 35.5-37.5
Hips 41.5-43 45-47
How to Measure
Womens size chart measurement guide
  • 1. Chest/Bust: Measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.
  • 2. Waist: Measure around the natural waistline, allowing the tape measure to sit comfortably.
  • 3. Hips: Measure around the fullest part of your hips.
  • 4. Sleeves: Start at the center back of your neck and measure across the shoulder and down to the wrist. Round up to the next even number.
  • 5. Inseam: Measure from the top of the interior leg to the bottom of the ankle.
Women's Fit Guide
Body contouring fit conforms to movement.
womens performance fit top
Body skimming fit with end-use mobility in mind.
womens active fit top
Modern Classic / Regular
Universal, easy fit for comfortable range of motion.
womens modern classic fit top
Most generous fit for a full spectrum of movement.
womens relaxed fit top

How to Measure

Columbia Fit Guide

How to Measure

  • Fold up at dotted line.
  • Place against a wall or other 90 degree surface.

    Place heel against fold/wall on flat level surface.
  • Mark the end of the longest toe with a pen or pencil.
  • Measure both feet and use the larger measurement.
  • Read measurement and compare to size chart.
  • When comparing on the size chart, determine the closest larger measurement and use that number to determine your shoe size for your country’s shoe measurement standard.

Shipping & Returns

Shipping & Returns

Shipping Information

Shipping Method Rate Expected Delivery Time
Ground $6.00 3-7 Business Days
2-Day Air $12.00 2-3 Business Days
Overnight $19.00 1-2 Business Days
Free Standard Shipping

Return Policy

Returns are accepted within 60 days of the purchase date online or in-store. Your apparel must be in original and unworn condition, with tags still attached. Footwear returns must also include the original box.

Still Have Questions

See our Customer Service section for more details. Visit Customer Service

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