Mammut Trion Pro 35+7L Backpack
MammutTrion Pro 35+7L Backpack

Built for any alpine endeavor.

The Mammut Trion Pro 35 Plus 7 Backpack will handle all of your alpine endeavors whether they be via skis, crampons, or boots. In addition to the top access, the Trion Pro also has a large back panel access point, making finding your gear easier and more intuitive. A large, reinforced front zipper is designed to carry either crampons or a shovel, while two ice axe gear loops and an A-frame ski carry system make the pack well-suited for both classic alpinism and ski mountaineering objectives.

The adjustable, aluminum frame supports heavy loads, while EVA padding at the back panel, shoulders, and hip belt provide a comfortable fit when weighed down with gear. A removable hip belt gives climbers the option of fitting the pack with an additional climbing hip belt when wearing a harness. The Trion Pro is designed to carry all the gear you need to tag the summit with daisy chain gear loops, a rope fixing strap under the top lid, and a hydration system compatible design. So whether you're skiing big lines in the North Cascades come spring or climbing mixed routes in the Alps, the Trion Pro 35 will get the job done.

  • Two-layer EVA back panel
  • Adjustable, aluminum Contact U Frame
  • Top and back panel access
  • Floating lid
  • Removable hip belt
  • Additional climbing hip belt
  • Hydration system compatible
  • Reinforced front zippered pocket
  • Rope fixing strap under top lid
  • Ice axe loops
  • A-frame ski carry system
  • Daisy chain gear carrier
  • Lateral compression straps
  • Reviews
  • Q & A

Great Splitboard Pack

  • Familiarity: I've put it through the wringer

Halfway through this Sierra winter season and this pack has ticked (nearly) all the boxes in what I could need hauling my junk through the backcountry. I'll just bullet point a few key bonus points from my backcountry snowboarder POV.

Organization: huge open back panel means easy access to a puffy, water, extra gloves on the climb. When I take my helmet out and put my jacket on up top the whole thing clamps down to a nice, rideable pack. The dedicated shovel/probe (and maybe crampons if you pack it right) pocket means quick access to the safety stuff without soaking your dry goods.

Lid: I keep it on for big days and take it off for quick laps. The rope carry feature works well for attaching a jacket on the hike.

Outer carry: I can pop on telescoping poles and an axe on the back loops and latches easy and still ride no problem.

Ski carry:(Bummer alert) Is just that, ski carry. I like carrying my board split up in an A frame style most of the time. The beefed up side loops are built for skis and barely just take in the board and the clips. In a pinch when I don't want to fuss with it I'll just use the two compression straps on each side and a ski strap up top for quick board carry. In a real pickle when you need to hike back up and are unable to split the board a rear board carry would be prime time. So it goes.

Carry: I've loaded up to the (over the) max for a long hut trip. Not planning on doing that again, but my legs gave out before my shoulders did.

Looking forward to stripping it down and seeing what it does for climbing season this summer and fall.

how do you adjust the frame?

You can access the frame by zipping down the back of the pack and make adjustments. If you have any other questions please email me at isaukerson@backcountry.com Thanks!

Hey Mr. Hicks,



The frame is inside a velcro flap, inside the pack. You can take the frame out from there, to adjust it. I have this pack, but I haven't needed to adjust the frame. Shoot me any others questions you have. You can call or email me, directly. 801.746.7587 ---->ejenson@backcountry.com

Hey Mr. Hicks,

The frame is inside a velcro flap, inside the pack. You can take the frame out from there, to adjust it. I have this pack, but I haven't needed to adjust the frame. Shoot me any others questions you have. You can call or email me, directly. 801.746.7587  ---->ejenson@backcountry.com