Arc’Teryx Acrux 40 In Photos

As promised, a whole lot of photos of the new pack, the Arc’Teryx Acrux 40, a streamlined waterproof mountaineering pack.

Arc’Teryx is a Canadian company, with a factory located in North Vancouver. A few years ago they had to relocate some of their production lines to Asia, in order to remain competitive. However the top lines of the brand are still manufactured in Canada. Both things that I own from Arc’Teryx, the Alpha LT jacket and the Acrux 40 pack, were made in Canada.

The Acrux is a streamlined mountaineering pack, made to shed the weight of a trekking pack. It’s basically a streamlined version of the Naos. They packs share the same lines and a similar design.

The Acrux packs come in three sizes: 40L, 50L and 65L. The Naos packs come in four sizes: 45L, 55L, 70L and 85L. I would have gone for the 50L, but they didn’t have it. They did have a Naos 70L. It’s an impressive sight.

I’ve played around with it a bit over the weekend. It’s a pretty nifty pack. Small enough when compressed for daily use and expandable enough to use on day hikes and weekend hikes. The pack can also be used for alpine climbing and ultralight backpacking. The pack does weigh about 3lbs (1.6kg) but it is made rugged.

I’ve come up with two interesting features. You will note that the pack seems full. It isn’t. It’s full of air. I kind of filled it up like that, when I closed it. That is amazing. This made me think that these packs can be used to serve as an improvised life jacket in survival situations.

Also, if you are camping and have to go get water from a stream or something like that, the pack can be filled up completely with water. Since it’s waterproof, no water will leak out. Now that’s pretty impressive. A few people have tested the pack by completely submerging it in a pool. The stuff inside remained bone dry.

The pack has a sleeve inside for a hydration bladder. Also, there is a waterproof access point in order to get a hydration tube through. There is a way to use the top lid from getting water into the pack, but the best way would be simply to put the hydration bladder in the front of the pack, with the zipline. That way the integrity of the pack isn’t compromised.

As mentioned before, the only problem is the lack of pockets. This can be a problem for some hikers. Accessing your stuff can be a pain when it’s all in one compartment. However this is a sacrifice that some hikers don’t mind making since their gear will remain dry, even in the most torrential downpour.

The Naos pack has got a nice kangaroo pocket in the front of the pack. It’s also got a more advanced hipbelt system. However it’s more expensive and I’m not going to pack a few hundred dollars more in order to get that feature. Naturally, I might just pick up a Naos pack the next time I’m in Vancouver. The Arc’Teryx factory has a few sales every year, usually at the beginning of summer and mid-way through the fall. Gear can be discounted up to 70%.

From the Arc’Teryx website:

The smallest Acrux, this pack offers the ultimate in streamlined simplicity. Features such as rear bungee, AC² Fusion Points, anchored side compression straps, and flush mounted stretch-woven backpanel are all laminated to the pack using AC² technology.

I don’t think I’ve seen a photo from the top side before, with the rolltop undone. The lid is removable and waterproof. Underneath, you will find a rolltop closure.


• RollTop closure
• Four external compression straps
• Fully seam taped
• Hydration bladder pocket
• Laminated moulded AC2 Fusion Points
• Monoframe backpanel
• Pigment dyed WaterTight Zippers
• Radially formed shoulder straps and HipPods
• Removable top lid
• Twin aluminum stays
• Waterproof Hydroport
• Webbing hipbelt with strippable Binary HipPods
• 3D shaping


• 420ACT fabric
• Spacermesh
• Tweave® Durastretch®
• EVA foam
• Kydex framesheet
• 6061 aluminum stays

Inside the top lid.

Details of the back of the pack.

A photo taken of the inside of the pack.

Author: range

I'm mathematician/IT strategist/blogger from Canada living in Taipei.

11 thoughts on “Arc’Teryx Acrux 40 In Photos”

  1. Hey,

    Thanks for the in depth review and discussion. I’m considering buying one of these packs, that is: the Acrux 40L – but one question – would it fit as hand luggage? I realise it would be a bit impractical to use it as this but I want it to fit multiple purposes… What are the dimensions? I can’t find the info anywhere.

  2. Hey,
    If it’s strapped down, it could easily pass as carry-on luggage. The top part can be taken off and you can pretend that it’s a fanny pack. It’s not a giant pack. It’s also pretty streamlined, making it look smaller in stature, especially with the top part taken off.

  3. No problem. It’s quite a nice pack, but it’s streamlined. No frills. It’s made for light backpacking. The benefit is that it’s completely waterproof. It’s also air proof, so if it’s empty, you can use it as a flotation device. I haven’t had the opportunity to use it quite as much as I would like, as I use an Oakley Kitchen Sink as my day-to-day pack to go to school. It’s not waterproof, but it’s got sections for books and stuff.

    The material is quite surprising. It’s very sturdy, which is why so many people say that it’s bombproof.

  4. The pack is comfortable, but minimal.

    It hasn’t got a full belt brace, but then again, it’s only 40L, so you can’t ever fill it up enough for this to be a problem.

  5. I have bought one a few years ago. But lately, the straps are coming out because the adhesive doesnt last long in the tropics.

      1. The adhesive has come completely undone. I’m going to send it to Arc’Teryx next month to see what I can get on the lifetime warranty. It’s really annoying. I thought this pack would last forever.

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