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Men’s Mountain Tech™ II Long Sleeve Top


http://www.columbia.com/mens-mountain-tech-ii-long-sleeve-top-AM6495.html AM6495
$14.98 $35.00
Style# 1463301
Greater Rewards members earn 150 points with purchase
Uses: Trail
Size & Fit Guide | Reviewers rated this product Fits Slightly Small | Fit Active


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Style# 1463301
Uses Trail


There’s a reason that the Mountain Tech has become one of our most popular technical pieces for active outdoor adventures: it fits like a dream and features Omni-Wick® technology to pull moisture away from the body quickly and keep you smelling fresh over the long haul.

  • Omni-Wick
  • Antimicrobial treatment protects this product from bacterial growth
  • UPF 15 sun protection
  • Center back length: 27”
  • Imported

  • 100% polyester jersey
High-Performance Wicking Fabric

Technology Videos

Play youtube video about Omni-Wick (tm)
Pulls moisture away from the body so sweat can evaporate quickly.


Rated 4.5 out of 5 by 36 reviewers.
Rated 5 out of 5 by Mens Mountain Tech long sleeved shirt My husband loved this shirt. said it was a great fit light weight and wears well with everything .Happy Camper August 18, 2016
Rated 5 out of 5 by Awesome Thermal Top I use this as a Thermal under my Ski Jacket, it's the best thermal that I have owned and is moisture wicking. Wish could buy more of these January 4, 2016
Rated 5 out of 5 by Had a feeling Had a good feeling the moment I put the shirt on. True to size & comfortable. I wear clothes that make me feel good & your products do just that. May 1, 2015
Rated 5 out of 5 by looks and feels good Great shirt, and is worn as a dress undergarment. Very comfortable... April 7, 2015
Rated 4 out of 5 by Good shirt I bought this for those brisk midwest mornings and nights. The only downfall with the shirt is the fit. The large fit extremely large and the Medium fit a little small. I am 6'2 185 and am in that middle range. April 1, 2015
Rated 5 out of 5 by Another quality product I have several Columbia base layers and each one has been exactly what I expected. March 31, 2015
Rated 5 out of 5 by Perfect shirt I bought two with the intended purpose being a long sleeved shirt that I could run in. This shirt keeps me warm when I need it to and keeps me cool and dry when I need it to. It is also very comfortable and stylish enough to wear casually. I would have ordered more if there were more colors to pick from. March 15, 2015
Rated 4 out of 5 by Awesome Shirt First purchase from Columbia and if all their products are as good as this one I'll be doing a lot of business with them. March 15, 2015
Rated 4 out of 5 by Good shirt It fits a little bit smaller than I woulda hoped. March 14, 2015
Rated 5 out of 5 by Great workout shirt I bought this as a workout shirt. Good quality and fit! March 3, 2015
Rated 5 out of 5 by Great Shirt Love this shirt, wore it a full day when it arrived. Nice soft fabric and breaths excellent and is surprisingly much warmer than I thought. It serves a solid base layer or can be worn by itself. I have done both so far and have not been disappointed. I have not put it through some intense sweating or a rain situation yet so I can't comment on drying time but I will have plenty opportunity this Spring. Sizing: I am 5'11 and about 165 with longer arms. I typically need to purchase a Large. I went with a Medium for a more active fit and glad I did. The medium arms length is perfect and a great body fit. A large would have been way to big. February 10, 2015
Rated 5 out of 5 by Typicakl great Columbia SW Product I now own several OMNI-WICK shirts. They are very comfortable, either as a base layer or on their own. I buy L or XL and the write-up said the sizing "Fits Slightly Small", so I bought the XL. That was a mistake. The arms were way too long. I would rate it as "Fits slightly large". I exchanged mine for a Large, which is perfect for me. November 22, 2014
Rated 5 out of 5 by Love this shirt!! This shirt is the perfect weight for our Southern weather. I would definitely recommend this product. March 5, 2014
Rated 5 out of 5 by Great product I love this shirt. I use it to go on runs during the winter, and this shirt allows me to do so while staying warm and dry. Would fully recommend it. February 26, 2014
Rated 2 out of 5 by Fits is little large I bought it on clearance. Otherwise, it does not worth the regular price. This shirt means for under layer. The fit runs large and sleeve is too long. February 24, 2014
Rated 5 out of 5 by So far so good I ordered several of these tops as a light base layer. It's early in their lifetime and the question will be their durability over time. But so far I've been pleased. The fit is comfortable, snug but not overly so. I'm pleased with the weight - they're nice and light but provide some warmth. And they seem to wick moisture nicely. I'm wearing these where I've worn Patagonia Capilene 3 tops in the past, and though they're not as warm, they're not that far off. (And on sale they were less than 1/3 the price of the Patagonia.) I'm about 6 feet tall, 153 pounds, and medium fits fine. Note that the sleeves on these are relatively long and loose at the wrist - fine for me, possibly not for everybody. February 19, 2014
Rated 5 out of 5 by Very comfortable and excellent shirt This shirt is very comfortable and not to warm February 19, 2014
Rated 5 out of 5 by Men's Moutain Tech Great shirt very true to size, comfotable and breathes well when warm or cold. Take with me on all kinds of trips. To Costa Rica next month! February 3, 2014
Rated 5 out of 5 by Excellent product Received one of these for Christmas present. Liked it so well, I ordered two more, different colors. I have now worn all three and I really do like them. January 29, 2014
Rated 5 out of 5 by Great product Fits like it should. January 29, 2014
Rated 2 out of 5 by Design has been changed This product is NOT the same as it was last year. The cuffs are now shorter and no longer have the thumb hole, which was a nice feature for my use (base layer for motorcycling). Product quality is fine; it just isn't the same product that it was last year, which has affected the desired functionality. January 28, 2014
Rated 4 out of 5 by Nice, functional shirt The mountain tech 2 shirt is well made like all of columbia's products. Works great worn alone or under fleece top. Good wicking abilities. January 27, 2014
Rated 4 out of 5 by Mountain Tek review The shirts I purchased fit well and are being used for warm-up shirts for my son's basketball team. The fabric is lightweight and ideal for this sort of use. January 23, 2014
Rated 5 out of 5 by excellent shirt doesnt shrink in the wash. I'm 6'2, 185 lbs and the large fits perfectly. January 20, 2014
Rated 5 out of 5 by great shirts!!!! excellent quality, lightweight and very comfortable. true to size. January 4, 2014
Rated 5 out of 5 by columbia tech ii my son and husband both got one of these and like them alot. great feel! December 29, 2013
Rated 5 out of 5 by Great Shirt I bought three of these shirts for a winter hiking trip as base layers and lounging around in the cabin after the hike. They were great as a base layer and look good as an individual shirt. I also like that they have thumb holes in the end of the sleeves to help keep you hands warm. December 12, 2013
Rated 5 out of 5 by Excellent product Living at 9600' in the Colorado Rockies this line of shirt is welcome. It fits well and is warm but can be worn encounters to work in Florida. I can't say enough about the functionality of the shirt. Do follow the sizing as it does fit on the small size. November 16, 2013
Rated 4 out of 5 by Good shirt This long sleeve shirt is nice, but the length is just a tad short. Does not keep warm, so do not use this as a thermal. October 27, 2013
Rated 5 out of 5 by Breathable True to size, comfortable and breathable, another great product from Columbia. September 30, 2013
Rated 5 out of 5 by second skin I bought bigger than normal but it is still fine. Typically I would go with Med to use as a tight base layer, but picked a Large. It's loose on me but I used it as a second layer just fine. I like it still and will wear it often. February 28, 2013
Rated 4 out of 5 by Mountain Tech II LS I have been a big fan of the Columbia Mountain Tech SS shirts and LS. More recently they have changed the sizing, the SS is no longer an option for me as the last order I had to send back as the medium is now a small. Back to the LS the most recent order the one I'm reviewing here; the body of the shirt fits well and is what I'd describe as a true medium the sleeves however are a bit too long and tight in the forearms. Still works but bugs me a little, my older ones fit better. January 7, 2013
Rated 5 out of 5 by Great Wicking Can't wait to really sweat when it gets warmer to really feel the quality. December 30, 2012
Rated 5 out of 5 by Great for mountain biking Shirt keeps moisture away from skin and dries relatively quickly. Great for early morning mountain bike rides or fly fishing trips. November 5, 2012
Rated 3 out of 5 by They changed the fit from last year I bought three of these shirts last year and thought they were great. I bought 2 more this year and the fit has been changed. Overlayed the new with the old and the old had about 3 inches more material around the waste and a little more through the chest and arms. The arm to chest seam has been changed, but I don't think that is a big factor. Last years shirts could be worn by themselves if need be. Had a loose feel to it. This years is more like a base layer. Not what I was expecting or looking for. Was expecting it to be like last years. Not happy with my purchase. October 24, 2012
Rated 2 out of 5 by too small I wish that columbia would be consistent in their sizing. I buy many large shirts for my husband and they fit great, I bought this shirt in a large and its tiny... a little frustrating . October 12, 2012
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Size & Fit Guide

Size Chart

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

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
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