Mammut Backpacks Mountaineering Trion 35 (2021)

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The Trion 35 is the result of many years of experience with alpine backpacks: as well as traditionally top-class materials and workmanship, its huge back opening also sets standards in terms of handling and ease of use. The Trion 35 is the perfect backpack for all alpinists with a no-compromise attitude to their equipment.


  • Huge back panel zips open for easy access to the main compartment
  • Height-adjustable lid with zip pocket
  • Large front zippered pocket holds frequently used items such as crampons, avalanche shovel, rain gear or flip-flops; internal zippered valuables pocket; mesh side pockets
  • Mesh pockets on shoulder straps hold your phone, camera or snacks
  • 2 leashless-compatible ice axe carriers; trekking pole carriers; reinforced side ski-carry straps; external daisy chains for add-on pockets or gear
  • Superlight, highly breathable perforated EVA foam padding
  • Hydration compatible (reservoir not included)
  • Detachable hipbelt with gear loop
  • Excess-load strap under top lid; side compression straps can fasten across pack front for additional carry option
  • Manufactured in facilities certified by the Fairwear Foundation for fair working conditions
  • Mammut Connect-enabled allows optional digital interface with a phone app for additional product information and long-term service

Technical specs

Best Use-
Bag Style-
Frame Type-
Internal Frame
Gear Capacity (L)-
35 liters
Gear Capacity (cu. in.)-
2,135 cubic inches
Hipbelt Pockets-
Fits Torso Length (in.)-
16.5-20 inches
Fits Waist/Hips-
29.5-39 inches
Nylon/closed-cell foam
Frame Material-
Number of Stays-
1 peripheral hoop
Pack Access-
Top/back panel
Number of Exterior Pockets-
24 x 13 x 5 inches
3 lbs. 3 oz.

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