Get It Before Labor Day Weekend—Order With Free 2-Day*by 5pm MT 9/2/15

When breaking a sweat is your first order of business, pull on the Mammut Men's MTR 71 T-Shirt. The lightweight and highly breathable Ventech fabric dries in a flash and has a healthy dose of elastane for mobility. Even better, the antibacterial treatment keeps you from smelling like a high school gym bag.

  • Ventech polyester is highly breathable, quick drying, and soft against skin
  • Athletic fit with generous fabric stretch allows you to move freely
  • Running-specific seam placement and flat seams ensure chafe-free comfort
  • Antibacterial fabric treatment keeps the man stink away
  • Reflective logos increase your visibility to motorists in low light

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Mammut MTR 71 T-Shirt - Short Sleeve - Men's

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Here's what others have to say...

5 5

Very light

  • Familiarity: I've used it several times
  • Fit: True to size

Good quality, good fit! Ideal for warm weather!

5 5


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

If you sweat as much as I do in the gym or on/off the trail you've probably tried a bunch of different performance t-shirts that claim they are "breathable" and "wick moisture" ... this one actually does!
I love outdoor wear but I don't have a favorite outdoor brand. I am partial to different brands for certain products. Again, if you sweat out a shirt within 1 hour at the gym or running on the trail this shirt is a must!

5 5

Hope Mammut does more of this!

  • Familiarity: I've used it several times
  • Fit: True to size

I don't know that Mammut has done much with lighter athletic shirt in the past but based on the MTR 71 I hope they keep it up. Too often in the past I have been stuck with trail running/ climbing shirts that are either too loose or compression fit. This shirt gets right in the middle if you size it right, giving you breathability and control. I have never experienced any chafing with this (not the case with other shirts), and as far as I can tell the Pure by HeiQ keeps out the smell even if I wear a couple times between washings.

5 5


It fits well, looks good, stretch but not too stretch, breaths well and wicks bad odor well. I am 5'10 200lbs with broad shoulders and Medium is perfect.

5 5

Mammut MTR Athlete Review

Mammut is totally on to something here with their MTR 71 shirt. Not only is this shirt great for those mild spring mornings to those hot days of summer, but the shirt just feels great! The VENtech is so light and breathable that a feather might lose the fight in being the lighter option. This shirt has felt great taking it out as a layering piece when it is a little cool and has the functionality to handle a variety of uses. Chaffing, not a word Mammut is accustomed to. The MTR 71 shirt has the fiber called elastane that provides some stretch to the fabric which allows for a nice and comfortable fit.

Mammut is a company geared towards true comfort and functionality out in the outdoors and in extreme alpine settings. If you are looking for a shirt that no matter what color including black can keep you nice and ventilated and cool all day long, then the MTR shirt is for you!