Leave the city behind.

Explore nature in style with the Mammut Men's Lenni Long-Sleeve Shirt. It offers the classic look of a flannel, but is built with a lightweight and packable fabric that keeps you comfortable when hiking and stows easily on camping trips. The fabric also wicks sweat and dries quickly for cool comfort when the sun is beating down, and it sports a FreshTech treatment to limit weird odors over the course of a long weekend in the woods.

  • Flannel styling meets active outdoor performance
  • Light, quick-drying, and packable fabric
  • FreshTech anti-odor treatment keeps smells at bay
  • UPF 40+ sun protection shields skin from sun
  • Reviews
  • Q & A

I love it

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

I bought this shirt to wear outside for work when I need to look decent but also need to stay comfortable. The cut is semi-fitted, so if your a big guy you should size up. I found that this fit me really well, breathes and looks great.

very tight cuffs....returning

  • Familiarity: I returned this product before using it
  • Size Bought: l

The fabric is nice, but looks much more gray than in the picture. The cuffs on the sleeves are very tight and the buttons are very hard to use. I'm sending it back.