A versatile pack for any alpine endeavor.

Mammut's Trion Guide 45 + 7 Backpack caters to the four-season climber who isn't easily dissuaded from alpine activities once winter blows in. When the summer months lead you to high elevation granite routes, the Trio Guide will carry everything you need for the ascent with a rope fixing strap under the lid, daisy chain gear haulers, and gear loops at the removable hip belt. The hip belt allows you comfortably wear a harness with the pack still on. Once winter makes you switch out your approach shoes for a pair of ski boots, the Trion Guide will remain on your gear list with a grip of ski-friendly features like the side ski carry straps, two secure ice axe loops, and a large main compartment with both top and side access points for when you need to access avy gear quickly.

  • Motion Butterfly suspension system
  • Two-layer EVA back padding
  • Roll-top access
  • Side panel access
  • Removable hip belt
  • Tritan ripstop nylon (5000mm)
  • Hydration system compatible
  • Ice axe loops
  • Trekking pole loops
  • Side ski carry
  • Rope fixing strap under top lid
  • Lateral compression straps
  • Daisy chain gear loops
  • Reviews
  • Q & A

Super Comfortable and Versatile Pack

  • Familiarity: I've put it through the wringer

I have used this pack for everything from climbing at my local crags to long alpine routes in the Sierra to guiding week long trips on Rainier. It carries a heavy load remarkably well even when it is over-stuffed. When the load is smaller the pack cinches down and stays slim and low profile. Its slim profile and body-hugging suspension system make the pack feel like a part of my back. It moves with me when I climb. The pack will carry everything I need for long trips and then I can take the lid off and have a smaller day climbing pack when I get there. Overall a great pack with all the right bells and whistles. The one very minor drawback to the pack is that sometimes the top lid catches on the load lifting straps at the top of the shoulder straps and loosens them up when you close the top lid. It is easy to just pull them tight again when you put the pack back on.

Some of my favorite features:
* Comfortable and balanced with light and heavy loads
* Lightweight but robust suspension system
* Easy to adjust
* Side panel access
* Removable lid
* Gear loops on the hip belt
* Easy access ice axe holders

Min and Max on the Waist Measurement

  • Familiarity: I gave it as a gift but have feedback to share

Had to confirm with Mammut for a customer and think this will help some of you out! The waist belt will accommodate a minimum measurement at 28" and the max is 48"

Sturdy and Slim

  • Familiarity: I've used it several times

In addition to being a solid alpine pack, the Trion Guide 45+7 is an awesome cragging pack. The side zipper is crucial, and the roll top allows you to really stuff your pack full if needed.

One note - like one of the other reviewers, I'm about 5'7", 143lbs, 29-30" waist, and the padded waist strap just baaaarely fits. I had to cut off the elastic strap keepers to allow the belt to cinch down far enough. Hopefully Mammut changes this in future editions.

Unanswered Question

Are there two traditional ice axe loops (red at bottom of pack) as depicted in the photo?

great backpack

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

i climb with the trion guide 45 +7 and it was confortable, i don't like the waist belt of this back pack, its too large, a'm 5,8" and 140 lbs and i don't feel it fit on my waist; otherwise, great product, nice space in, comfortable shoulder straps, amazing construction

great backpack

Where would be the best place to strap on either snowshoes or crampons to this pack? Or would there be a better pack for snowshoes/crampons?

crampons always very heavy ,so i think it's better put it in the bag under other thing,if don't have space,it's better choose other thing to hang the outside.

if you want through the mix route,it's in trouble.

Love the Color, LOL

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

I summit Chola Mountain with the Mammut Trion Guide. I have used it 16 days. I think it's little small for Alpine Mountaineering,maybe 50L is better。

in the Summit day I carry it have 19 hours,I don't felt any Uncomfortable,so I think it's prefect to help me finish this climibing mission。

if the side belt more longer is better ,I have thick pad,it's hard to bundle on the side,so i change a thin pad。

ps:forgive my poor english

Love the Color, LOL

Awesome photo Llu Lu!


Would this pack make a good all around crag pack or is it more specialized for mountaineering and alpine climbing?

Hey Kai,

You are correct in thinking this is more suited to mountaineering and alpine climbing. This bag could certainly work, but many crag-specific packs are much tougher to stand up to that type of daily abuse. The most durable fabric on this pack is 600Denier on the base, where something like this Black Diamond pack has 1200Denier all-around - http://www.backcountry.com/black-diamond-creek-50


Another option from Mammut, standard rope bag might be all you need. The fold-out mat makes for a nice belay area.