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Mammut Trion 35L Backpack


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Trion 35L Backpack

The Mammut Trion 35L Backpack is ready for your technical days in the mountains.  It features numerous attachment points and organization options, including a place to secure your trekking poles or ice tools. The entire back panel zips open for full access to your layers, food, water, and other gear, while a front pocket secures and organizes your avalanche safety equipment. A strap below the brain evenly secures your coiled rope across the pack, expanding your gear-carrying capabilities so you don't need to bring an extra rope bag.
  • Daypack features plenty of space for climbing
  • 35-liter capacity for technical day trips
  • Back panel zips open for easy access to gear
  • Front pocket secures crampons or avy gear
  • Excess load strap secures your rope
  • Item #MAM01BN

35L (2135cu in)
Shoulder Straps
Waist Belt
Hydration Compatible
1 zippered main, 1 avalanche safety, 1 internal mesh
Ice Axe Carry
Trekking Pole Carry
24 x 13 x 5in
Claimed Weight
3lb 3oz
Recommended Use
backcountry skiing, hiking, ice climbing, mountaineering, sport climbing, trad climbing
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?


>Rating: 4

My favourite crag pack so far!

I've used it several times
True to size
5` 11"
160 lbs

I absolutely love this pack. It's served me well through ADK approachs and weekends at the Gunks. The zippered opening on the back of it is a game changer. It's sturdy, it's got enough bells, whistles, and pockets that are useful but not so many as to be a problem finding what you need. Weight distribution is a sinch, ropes fit over the top perfectly. And its easy to life off the ground and shoulder. My only gripe is the hydration pouch is so low in the pack that a standard length hose forces me to turn to my left and back to drink from. I use a HydraPak Force 2 liter.