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MSR Base Layer Long Sleeve

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MSR Base Layer Long Sleeve

The MSR Base Layer Long Sleeve shirt is constructed from a light fabric material that will release 80% of its moisture after 30 minutes of rest. The compression characteristics offer less chance of pulled and sore muscle tissue which reduces body fatigue.


  • Base Layer fabric is 50% lighter than the standard cotton TShirt. After 60 minutes of exercise the Base Layer fabric releases 80% of its moisture after 30 minutes of rest, cotton releases only 40% of its moisture after 30 minutes of rest
  • Made with compression garments that will hold your muscles in place longer and reduce body fatigue. Less chance for pulled and sore muscle tissue.
  • Two different layers of fabric: Inner layer contains fibers that will wick the moisture off the skin quicker, creating a cooler inner climate. Once the moisture is separated from your skin the outer layer will evaporate the moisture evenly and fast.
  • Fabric is spun with wicking and antibacterial treatments
Product Style RevZilla Item # Manufacturer Product # Availability
Black / SM 142803 331204 In Stock: Ships within 24 hours
Black / MD 142804 331205 In Stock: Ships within 24 hours
Black / LG 142805 331206 In Stock: Ships within 24 hours
Black / XL 142806 331207 In Stock: Ships within 24 hours
Black / 2XL 142807 331208 In Stock: Ships within 24 hours


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We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
MSR Base Layer Long Sleeve 4.9 5 7 7
Great base layer shirt for Florida I ride in Florida and need a good base layer shirt to take the sweat away during the cooler months. I found this shirt does the job very well, is comfortable to wear under my Icon Stryker Rig and is very durable. You need to make sure you read the washing instructions to maintain the shirt properly. Another great product carried by Revzilla. October 26, 2015
Light and keeps you hydrated PROS: Wet your arms and you'll feel decent until your next gas stop, even under a heavy jacket and California's scorching sun. Nuff said. CONS: -none- September 4, 2014
Comfort This is the most comfortable under apparel I've picked up, and much better than just a t-shirt. Wicks moisture really well so it cools you down on hot days. I would definitely buy this again and recommend anyone else to also. May 27, 2014
MSR Base Layer Long-Sleeve Shirt I wore the MSR base layer shirt at a track event this weekend. It was very cool and comfortable. The texture and compression features of the fabric are quite nice. The sleeves were a bit short on me as opposed to the Under Armour shirt that I had been wearing. Where this shirt has sleeves that were an inch too short the Under Armour shirt had sleeves that were an inch or so too long. Given the choice I'd go with the shirt with the short sleeves. The snug fit was also much nicer under all my gear than something that has lots of extra material around the middle. I recommend the MSR base layer shirt without reservation. September 30, 2013
keeps you cool when wearing leather This shirt did a great job keeping me cool in 70 degree weather with a leather jacket. I will be buying another shirt soon thanks Revzilla June 8, 2013
Warm! -pretty well built -good material doesn't irritate skin or anything -keeps me warm in 25-40 degree weather without having to wear 10 layers of clothes and gear -i bought a medium and the sleeves are a tiny bit short(not even an inch fully stretched out) but doesn't effect warmth I'm 6"2 at 175lbs. March 13, 2013
Love it Fits well, constructed well, well thought out design. October 21, 2012
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