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Men's Baselayer Midweight Long Sleeve Top


http://www.columbia.com/mens-baselayer-midweight-long-sleeve-top-AM6944.html AM6944
$39.90 $55.00
Style# 1422531
Greater Rewards members earn 399 points with purchase
Uses: Winter, Ski / Snowsports
Size & Fit Guide | Reviewers rated this product Fits Slightly Small | Fit Performance


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Style# 1422531
Uses Winter, Ski / Snowsports


With thermal reflectivity for lightweight warmth and sweat-wicking inserts, this midweight top is the ideal all-day baselayer for aerobic activity. Finely tuned ergonomic seaming cuts a sleek, comfortable-wearing silhouette.

  • Omni-Wick inserts keep you dry and comfortable
  • Omni-Heat thermal reflective lining for lightweight, breathable warmth
  • Performance fit
  • Antimicrobial treatment protects this product from bacterial growth
  • 4-way comfort stretch and ergonomic seaming
  • Imported

  • Omni-Wick inserts under arms and at side torso
  • Omni-Heat thermal reflective lining
  • 85% polyester/15% elastane sweet rev
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.


Rated 4.4 out of 5 by 72 reviewers.
Rated 5 out of 5 by Baselayer Product is awesome. Keeps your warm while moving in the cold. And nice and toasty under covers in bed. October 22, 2015
Rated 5 out of 5 by Good thing for baselayer I bought this thing for active winter sports. Usually winter is cold in Russia. Approx . 15-25 degrees C.. In these conditions Omni-Heat showed itself with good side. It keeps body warm and dry. Nice baselayer. February 25, 2014
Rated 2 out of 5 by Still Cold I bought this after hearing good reviews about the heavyweight one, but being restricted to the colors of white and black, I could only find the midweight in my size and the right color. Despite this, I decided that I'm a warm enough person that I wouldn't need too much extra material to deal with the cold. I was wrong. It felt exactly like my regular shortsleeve compression shirts from Under Armour, but with long sleeves. I was hoping that maybe I was just mistaken the first time, so I wore it a few more times to see if I was wrong, but to the same effect. I eventually went back to wearing my regular compression shirts as they felt better. February 14, 2014
Rated 5 out of 5 by Performs really well Love the midweight base layer. I am about 6ft 190lbs and normally wear a large base layer as I like them slightly baggy. This fits just as expected. The omni heat tech is great and is a perfect mix of wicking and warmth. Love this product! February 10, 2014
Rated 4 out of 5 by sleaves don't fit well The sleaves are a little long, tight, and don't fit well in the pits. However it is a good baselayer and helps keep you warm January 22, 2014
Rated 5 out of 5 by All around Great! I got this midweight baselayer long sleeve to wear at work during the day, as I am constantly in and outside. The baselayer keeps me warm with just a button up shirt over it. The size was right on and fits me perfectly (about 5'10" 160 lbs.) The fit is comfortable and the material feels soft enough for comfort yet very durable. Great product for warmth, very light weight. January 13, 2014
Rated 1 out of 5 by Doesn't seem to work I bought this shirt hoping for significant warmth as a baselayer. Under a sweatshirt and jacket at 27 degrees, it wasn't as warm as another performance shirt under a polo shirt and jacket in 17 degrees. I always thought the other brand was a lot of hype but apparently not. This shirt is described as midweight but it is thin and like a compression shirt. The armholes were somewhat tight and sleeves were too long. December 16, 2013
Rated 5 out of 5 by Great Shirt Great warm shirt. Use them daily in winter as an undergarment. December 15, 2013
Rated 5 out of 5 by Awesome Used the product for a 8 degree run baselayer. Warm and dry. When I changed later, the baselayer was dry. December 8, 2013
Rated 5 out of 5 by Great Fall/Winter Shirt! I bought this shirt for my husband for his birthday...I obviously haven't worn it but based upon the number of times its landed in the laundry basket in the two weeks he's had it I think its safe to say he loves it! Most recently we went on a snowy hike in the Rocky Mountains and he left the car with just this base layer, a tshirt and a windbreaker. I asked if he was going to grab his zip up as well. He said "naw, I have my Columbia base layer on, I won't need it". And he didn't. The omniheat of this base layer is legit! As far as fit - he is 6ft and 150lbs or so and has the medium. It is a loose fit which he likes. He can easily wear it as a layer or as his only shirt, depending upon weather. Photo -- snowboarding in just base layers, he is wearing the Medium Mid Weight in gray! Gotta love early season in Colorado! November 14, 2013
Rated 5 out of 5 by baselayer great in the winter Bought a set of middleweight baselayer top and bottom in Chicago last year while freezing at a conference. They are superb. I ended up using them throughout the winter in Colorado Springs both under a flight suit and while enjoying outdoor sports. They are the perfect match of warmth and functionality, but breathe enough to avoid soaking with perspiration (e.g. while skiing). I highly recommend. Admittedly, they are a bit pricey for a set of long-johns. October 10, 2013
Rated 4 out of 5 by Great Product The Men's Baselayer Midweight Long Sleeve Top is a great replacement for the thermal underware of old. Granted, there are only a few days a year that I need some extra warmth here in the Lower Keys but when I do, this base layer is all that is required. There are some sizing issues but overall, I love it. October 1, 2013
Rated 5 out of 5 by Very nice, looks good! This product is very comfortable it fits me perfect and it keeps me nice and warm,, very flexible I personally wear this at work since I work in a cooler.!! September 29, 2013
Rated 2 out of 5 by too small I own over 20 shirts/fleece/sweaters of Columbia and this was not even close to being an XL. May 22, 2013
Rated 5 out of 5 by Great Base Layer This base layer kept me warm when the temperatures got down to the 30's. It is nice and snug as it should be. I've washed mine a couple time and hang it up to dry and I haven't had any problems. I wore this base layer set in my sleeping bag and got really warm. Great product. March 26, 2013
Rated 5 out of 5 by Warmer than expected Great midweight baselayer. Warmer than I expected. March 6, 2013
Rated 5 out of 5 by Best there is. Fished in tournament this weekend and it was 27 degrees starting out with a high of 40 and strong north winds. I never got cold. February 18, 2013
Rated 5 out of 5 by This product has great features Great, warm, and worth the price! February 6, 2013
Rated 2 out of 5 by Body fit runs very small Ordered an XL, body is very tight February 3, 2013
Rated 3 out of 5 by Runs small I am a plus size woman and since Columbia does not provide much for me I had to order a mens product. I miss having color selections and the sleeves are way too long for a woman. I would have been extremely satisfied had I been able to get a woman's fit January 30, 2013
Rated 3 out of 5 by This is a quality product but the sizing needs improvement. I normally wear a large with no issues. I ordered a large and the fit was very tight around the arms and shoulders while the sleeves were probably 2-3 inches too long. The garment itself is well made so my advice is to try it on before you purchase. January 29, 2013
Rated 5 out of 5 by Great Baselayer Keeeps me warm enough with several layers and a large down parka when its below zero (F) . Sleeves are a little long, but give protection between the jacket and gloves. Tight fit, but more form fitting than "compression" fit. Don't even notice I'm wearing it. Have it in blue and in black, as well as the pants. Can't recommend enough. Omni-heat is fabulous. January 23, 2013
Rated 5 out of 5 by Love it Just in time for this cold weather January 21, 2013
Rated 5 out of 5 by Keeps me warm Omni-Heat base layer kept me warm when playing golf in low 30 degree weather. works well with several layers January 7, 2013
Rated 5 out of 5 by Men's baselayer midweight top Love this piece. It runs a little narrow and long, but is warm and breathable. Time will tell if it wears and washes well. December 31, 2012
Rated 5 out of 5 by As never before Enough to be out working, playing or walking, It is one of the best baselayers on the market , its will keep you so warm, is wanderfull, Afeter try the first baselayer I been Order 3 more to pass the Winter at Waterdown, Hamilton, Canada. Congratulation to Columbia for this. Technology, and quality Fernando December 28, 2012
Rated 4 out of 5 by Not quite on the mark I would recommend but with a disclaimer. The medium was to small and to tight in the arm pit with sleeves a bit to long. I had to order an Large which fits better even over my undershirt and is still snug in the arm pit and the sleeves are 4 to 5 inches to long. I am more comfortable temperature wise but for the money the garment could fit better. December 4, 2012
Rated 5 out of 5 by finally warm,and not bulky I think the omni heat feature is fantastic! It is light weight, not bulky and comfortable. In a suitcase it takes up very little room . I have been out in the wind and cold and do not get cold while wareing it. Looks great under a military uniform or as a shirt when off duty. December 1, 2012
Rated 3 out of 5 by sleeves too long Sleeves too long, reached pass my fingertips. However, body was true to size. Noticed a tear near a seam and had to return item. November 27, 2012
Rated 5 out of 5 by Great base layer for cycling This base layer provides warmth without bulk. It fits nicely under a snug fitting winter jersey. November 26, 2012
Rated 1 out of 5 by Wrong product for me. Bought a $40 shirt, 6$ to ship, $15 to return because it did not fit. Not a way that I will be doing business in the future. November 19, 2012
Rated 5 out of 5 by Great underlayer for winter golf This one thin layer will keep you warn with another T-shirt on top of it. I also have a pair of baselayer tight I brought last year, very happy with those too. I will get another top when I get new offers. November 18, 2012
Rated 5 out of 5 by Great item I ordered this for my husband who works outside. He likes the med. weight and warmth. November 15, 2012
Rated 5 out of 5 by This product has great features The baselayer worked great, and required fewer outer layers to keep warm. June 2, 2012
Rated 2 out of 5 by Ridiculously long sleeves This would be an excellent and very warm baselayer shirt if the sleeves weren't ridiculously long. They extend down to the end of my thumb. If you've got arms like an orangutang, then this shirt will work. If not, look elsewhere. May 31, 2012
Rated 5 out of 5 by Will get another one Bought one for my husband. Very warm and soft. I'm getting one for myself. May 1, 2012
Rated 4 out of 5 by Warm thin baselayer, but may need to size up Performs as expected in 10 degree weather but runs small and bunches up on me. I normally take Large in tops like this but if you are not slender, suggest you size up, then you will not regret this purchase at all! I use this top walking outdoors or driving with window open at night. I deliver newspapers! January 30, 2012
Rated 5 out of 5 by Great Baselayer! I have used this product along with the matching pants a few times this winter in Northern Wisconsin for snowmobiling and I could not be happier with them! I have been able to shed an entire layer since I started wearing this, it is light, extremely warm and comfortable. Great product, can't wait to use it for fishing! January 19, 2012
Rated 5 out of 5 by Men's Baselayer Midweight Long Sleeve Top I purchased this clothing item to replace my cotton thermal shirt, and to tolerate the sub-zero Chicagoland winters. The only thing I can say is "perfection". January 19, 2012
Rated 5 out of 5 by Base Layer Excellent for the cold Alaska weather. December 30, 2011
Rated 5 out of 5 by So far, so good! I bought this for my husband's birthday. He works outside all day, on top of roofs and ladders. This works well since it doens't restrict his movement at all. He said he could really feel his arms being warmed. December 20, 2011
Rated 5 out of 5 by Great Product I used this for hiking and sailing as a baselayer. Fits greats and will keep you warm. Note its a midweight. Therefore you may need a little extra to keep you warm depending on how well you deel with the cold. December 7, 2011
Rated 4 out of 5 by Warm and Tight Bought this for the deer stand and for skiing in Tahoe...very warm and comfortable! The midweight is plenty for someone hot-natured like myself! December 1, 2011
Rated 5 out of 5 by like mithril first cold weather base layer purchased. this thing is pretty awesome. It'll keep you at a great, comfy temperature if it's a bit breezy or cool outside. This effect is greatly reduced if exposed to wind (i.e. layering with short sleeves), but this can be used to your advantage based on the outside temp and how much moving you'll be doing. Also doesn't stink up very much at all. The shiny omni-heat dots are pretty nifty too. November 23, 2011
Rated 5 out of 5 by I love it , Warm, lightweight layer As a runner, I bought this for running in cooler weather and for layering when it gets downright cold. I thought the omni-heat dots might be a gimmick but was surprised at how warm I stayed while running on a morning in the low 30s. It was plenty breathable and surprisingly comfortable. Definitely a new favorite. November 23, 2011
Rated 5 out of 5 by Warm Warm Warm!! When I first saw that Columbia was introducing a new base layer I was hoping it would be something that fits close to the body. Sure enough it was exactly that along with the Omni Heat! I wore this to a very cold football game and was warm all quarters! Bravo Columbia! November 23, 2011
Rated 4 out of 5 by Kept me warm I wore the shirt when I had to work outside on a very cold day. I started when it was 18 degrees outside and it warmed up to a cool 40 degrees. The shirt kept me warm with minimal layering so my clothes weren't too bulky to be working in. I was worried the inside of the shirt would be scratchy against my skin but it was soft. Wish it was a turtleneck because I will only wear it when it is cold outside. Negative: When I took my jacket off and I cooled down too much, my body had to warm the shirt up first then it kept me warm. I have hiking boots with the same technology and if I stop my activity for too long and my feet get cold then they don't warm back up until after I am moving for awhile and sometimes it takes too long to warm my feet back up. Shirt seemed to have the same issue. It is perfect as long as my body stays warm. If I get cold then I have to be active for the shirt to work. November 13, 2011
Rated 4 out of 5 by Like a second skin I thought the silver dots against my skin would be a little irritating, but you don't even feel them. What I like about these is that they are thin yet still keep you nice and warm. Only drawback is they fit a little too tight around my forearms. Would recommend and will buy more. November 9, 2011
Rated 4 out of 5 by Stay Warm This product has a great range of motion. I have been wearing it for 13 hour and it is still comfortable and warm. November 5, 2011
Rated 5 out of 5 by Good baselayer Omni-heat technology keeps you warm, without being bulky. It's awesome! November 4, 2011
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Size & Fit Guide

Size Chart

Size & Fit Guide
Men's Body Measurement (Inches)
Neck 14-14.5 15-15.5 16-16.5 17-17.5 18-18.5 19-19.5
Sleeve Length 32 33 34 35 36 37
Chest 32-35 35-38 38-41 42-45 46-49 50-53
Waist 26-29 29-32 32-35 36-39 40-43 44-47
Hips 32-34 35-37 38-40 41-43 44-46 48-50
Neck 17-17.5 18-18.5 19-19.5
Sleeve Length 35 36 37
Chest 42-45 46-49 50-53
Waist 36-39 40-43 44-47
Hips 41-43 44-46 48-50
How to Measure
  • 1. Neck: Measure at the base or thickest part of your neck.
  • 2. 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.
  • 3. 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.
  • 4. Waist: Measure around the natural waistline, allowing the tape measure to sit comfortably.
  • 5. Hips: Measure around the fullest part of your hips.
  • 6. Inseam: Measure from the top of the interior leg to the bottom of the ankle.
Men's Fit Guide
Body contouring fit conforms to movement.
Body skimming fit with end-use mobility in mind.
Modern Classic
Universal, easy fit for comfortable range of motion.
Most generous fit for a full spectrum of movement.

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
UPS Ground $6.00 3-7 Business Days
UPS 2-Day Air $12.00 2-3 Business Days
UPS 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