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Mammut - Trion Pro 35+7L Backpack

Mammut Trion Pro 35+7L Backpack

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Technical Daypacks we have in stock.

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Tech Specs

[main] Tritan nylon ripstop (420D), [base] Textura nylon (600D)
35 + 7L (2136 + 427cu in)
Contact U Frame
Shoulder Straps:
padded and adjustable
Waist Belt:
Hydration Compatible:
Reservoir Included:
top, back panel
[external] 1 large front, 1 top lid, [internal] 1 top lid, 1 internal accessory
Ice Axe Carry:
Trekking Pole Carry:
26 x 12 x 8.5in
Claimed Weight:
3lb 8oz
Recommended Use:
alpine & expedition, climbing, ski mountaineering
Manufacturer Warranty:
2 years

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

Great climbing / alpine pack

  • Familiarity: I've put it through the wringer

I've used this pack for summer rock cragging, long alpine days, and winter ice climbing. I can stuff a large summer trad rack, plenty of water, harness, food, jacket, etc. in this pack. It also rides comfortably when carrying, fully loaded or lightly packed on a multipitch route. The gear loops are fantastic! It also has a nice variety of small inner zip pockets for small items. Can't say it enough. Love this pack!

Too tall

  • Familiarity: I've used it once or twice and have initial impressions

This is a great backpack lots of room but I can’t use it because the back part is waaaay to tall. I am not a large person but people around 5’10” have said it’s too tall. The back hits your head especially with a helmet on. Good backpack but I think you need a heads up about the back before you buy it.
Disclaimer; I have a 6’2” friend who loves this backpack

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.