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Use the Arc'teryx Men's Altra 35 Backpack for your gear when you plan on bagging a few Colorado fourteeners during the summer months. This strong, durable, weather-resistant pack features a C² suspension system to help keep weight to a minimum and provide a stable, comfortable, and supportive pack that carries your essentials and then some during arduous feats.

  • C² (composite construction) system's minimized construction lamination decreases pack weight and makes the pack sit close to the body, which minimizes load movement and backward pull and increases energy conservation
  • Ergonomically shaped shoulder straps feature 500D nylon with silicone-treated PU fabric for durability and protection against dirt, snow, and water pick-up, a Hypercell foam to provide stability and comfort, and SpacerMesh lining for airflow
  • Twin 6005 T-6 extruded aluminum M-bar stays are rigid and lightweight to provide structural support
  • Back panel consists of HD 80 foam for support, structure, and comfort against the back while burly double-weave fabric offers strength, durability, and next-to-body comfort
  • Altra 35L is available in short, regular, and tall and holds everything you need for a long day on the trail or in the canyon
  • Vertical-zippered access point offers easy access to your gear
  • Extendable top lid and extension collar enable you to carry larger loads and use the Altra 35L as an overnighter when you pack light
  • Body fabric consists of 210D nylon ripstop fabric coated with silicone to shed moisture, increase water resistance, and provide durability and tear-resistance
  • 500D nylon silicone-treated PU fabric in high-wear areas supplies extreme durability and resists dirt, snow, and water pick-up
  • Extension collar features 100D nylon mini ripstop fabric that has incredible tear resistance and a silicone coating that sheds moisture
  • Hydration compatible (bladder not included) with a hydration sleeve external access point for convenience
  • Wingman one-handed easy access pockets store your camera or headlamp
  • Double-chamber top lid organizes your gear
  • Large front kangaroo pocket stashes frequently used items while an internal security pocket holds your keys, phone, or wallet
  • Dual P'ax ice tool carry systems enable one-handed access to your tools

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Here's what others have to say...

Man Packing vs Lady packing

Man Packing vs Lady packing

In true stereotypical fashion I took my 62 Altra on a 1-night camping trip (hey I NEED that bottle of wine and my mega memory foam sleeping pad) and Justin here was able to cram all his crap in this Altra 35.

He must be some kind of wizard or something. I could never fit everything I need in a 35L pack - that's crazy town!

Unanswered Question

I don't know why i am having so much difficulty with this but i am using my pack and trying to use a camelbak and i haven't been able to find the actual port where the hose comes out of the pack i was just leaving the zipper open enough so that the hose could fit out but does anyone know where the hose is supposed to come out of?

A little walk in the Uintas

A little walk in the Uintas

Comfortable pack. Plenty of compartments to organize your stuff. I only wish there was a little more padding in the shoulder straps.

Hi. Can this pack be transport inside a...

Hi. Can this pack be transport inside a airplane?

Or is it too big?

Best Answer

I flew with this bag as my secondary carry on item. It fit under the seat in front of me. It was not packed to capacity. I have the small version of this pack

Will a small bear canister fit in this...

Will a small bear canister fit in this pack (BV450, for example)? Thank you.!

It might be a little snug, but it should. This is quite a large pack.



The ice axe storage is present, but there is no flap that can be unclipped (like the larger Altra packs) for extra gear.



The load carry plate is smooth with a pronounced lumber curve.

Back view

Back view

The pack is quite narrow. This is the "tall" version, so actually 37L.

Side view

Side view

The wingmen are empty in this view. When full, they would just barely peek forward of the backplate.

Pocket Config

Pocket Config

I put a 1L Nalgene in here for scale. A 16oz fits in there and it will zip...



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

Filled mine up and got the following dimensions (these are "squared off" so pretty safe...):

10 x 31 x 13

Anybody got dimensions for this pack (35L)...

Anybody got dimensions for this pack (35L) fully packed? I'm wondering if it meets airline carryon requirements..

Best Answer

I wouldn't guess that this is fully packed, but you're really the only one who can control the weight of the thing when fully packed, so I cannot assist on that note. However, I did find some measurements off Zappos for the size dimensions; when fully packed, I would guess you could maybe add an inch or two to these due to pack/fabric stretch? No matter, I hope this is essentially what you are looking for--


Bottom Width: 13 in

Depth: 6 in

Height: 22 in

Strap Length: 35 in

Strap Drop: 15 in

Weight: 2 lbs 13 oz

Thanks James! This -- to my amazement -- just popped up on Steep and Cheap (in my size and color too!). So I picked it up. I'll load it up and post some photos!

Awesome. I hope that the sizing dimensions are correct - if not, shame-shame on Zappos. Please let the BC community know what you find, and whether or not the dimensions you gather are as claimed or if they differ. Any input from adventurers is generally sound.