Lightweight InsulationLightweight Insulation


One day for 5000ft of alpine climbing? Sure. Pack the Arc'teryx Cierzo 35 Backpack with the essentials and get to it.

Created for single-push ascents and ridiculously lightweight alpine climbs, the Arc'teryx Cierzo 35 Backpack holds just want you need and adds only a scant 20oz to your total gear weight. As if this Arc'teryx pack weren't light enough already, the back panel, waist-belt, compression sling, ice-axe loops, and even sternum strap can be removed to shave weight even further. The Cierzo 35 Backpack includes a 40mm webbing waist-belt to add support without interfering with your climbing harness. *Only available for US shipment.

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Arc'teryx Cierzo 35 Backpack - 2136cu in

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Here's what others have to say...

4 5

Great alpine pack

Finally got a chance to bust this out on Shasta's Casaval route. The bag folds up pretty small, even with the foam pad left in. On summit day, it held shovel, avy probe, liter of water, ice axe (x2), trekking pole (x1), down jacket, shells (top and bottom), and some food/first aid.Overall I was really happy with it. A few complaints...the ice axe loops and buckle sizes. I knew that it only came with one velcro loop, but my haul-bag is the Bora 80, so my plan was to just strip off the velcro straps for that and use them on the Cierzo. Only problem is that the Bora straps are too wide, had to take a knife to the cierzo straps to get it to fit. As for the buckle sizes, they seemed a bit on the small side. I kept on mis-clipping the bag closed, accidentally connecting the side-straps to the top lid. Would have been nice for a little differentiation between strap systems. Finally, I had trouble getting the opening to cinch closed, seemed to take some work to get the coord to properly close off the opening.For what it's worth, I think my partner is thinking of getting one because of the huge weight savings on summit day.

Can you carry wide skis with this pack,...

Posted on

Can you carry wide skis with this pack, say wider than 100mm, preferrably in diagonal style?

Responded on

You might be able to rig that up, but I wouldn't recommend it. There's no frame to stabilize the load, and I would probably worry about the edges cutting the material. This pack is a straight-up no frills alpine summit-day bag. Enough room and 'comfort' for some food, water, down jacket, and the 10 essentials, not the type of bag I'd want to put a lot of weight in.

Does anyone know how wide this pack is? ...

Posted on

Does anyone know how wide this pack is? I'm looking for a pack to load a packed or unpacked parachute into for 2-6 hour hikes which typically for my needs means I need space for a 14x18x10 rig, rain gear, knee pads and a helmet. This is the largest compressible pack I've seen. Can someone give me some insight into its inner dimension?

Responded on

I'm looking at 22"h x 9"d x 11 w. the panel on the front has alot of extendabilty for, say, a helmet and you can strap things on the side with the compression straps. seems like it should work.

2 5

A start of something possibly good.

Pros: Well made, super light and almost perfect for weight concious high altitude ascents. Zippers are water proof quality. Adequate gear straps.

Cons: Price, single point of access to bag, zero back support, one ice axe/tools velcro strap

For $100, this is an expensive luxury to have as your secondary pack. This was made as a pack with climbers in mind. Though falling short. As a weight concious gearhead, no one would complain about the benefits of an side access zipper. The pack is light enough to allow that much. The shoulder straps are light, well made and comfortable enough and have gear loops for extra crabs, QDs etc. Though it falls short of expelling exess sweat and moisture.

My biggest gripe though is the part of the pack that comes in contact with the back. The pack itself is flimsy and sags due to the lack of back support. A piece of foam is all you get. The foam's effect is actually negated and doesn't come in contact with the back at all if you're sporting a water bladder. Once the bladder is inserted, the only thing between you and the bladder is the nylon material which the pack is made from. The bladder should be on the opposite side of the foam but isn't. If you're starting in the early morning, this leads to starting your climb/hike with your h20 bladder uncomfortably cold (sometimes frozen) and uncontoured to your spine. The hip straps could use some padding.

Despite the quality construction and intentions you could tell that this was a prototyped rushed into production and poorly executed. Where were the testers who objected to the lack of back design ?

Better luck next time. Hopefully the price won't go up.

Responded on

Just switch out the thin foam pad with thicker blue foam.
Both your stability and insulation issues are solved.

3 5

Light, not too simple, a bit fragile

This pack is quite functional as the simple and light day pay, you can strip the extra straps and make it really simple, as a stuff in your big pack and carry along for a day pack kind of deal. The fabric doesn't like sharp things or rocks very much and falls apart quickly. For half the price you can get an extremely similar pack from the canadian company MEC.

4 5

Great pack for base camp day trips.

Great pack for day hikes from a base camp or while traveling. Packs into its lid and takes up little space while backpacking, and much more comfortable than using the detachable lid. Just enough features to make it functional. Recommended if you are looking for a light weight, packable backpack while back country backpacking or traveling. Not recommended if you are looking for an all-purpose everyday use day pack.

4 5

Great Alpine Pack

I have been looking for a pack that would do what the Cierzo does for a long time. It is a light weight alpine pack designed to be carried in a big pack on the approach, then pulled out for the climb. I've had two other lightweight packs that were most uncomfortable when water and photography equipment were added to parka and clothes. This pack's suspension system, even though it's minimalist, works adequately. The slot for the foam pad doubles as a hydration sleeve. The zippers are water tight. My stuff in this pack didn't get wet in a thunderstorm on the South Sister.

2 5

Cierzo 35 falls short

I bought this pack, like many based upon the internet pictures, Arcteryx history of quality, weight, and "hydration compatible. I have to admit I was suprised, it appeared to be cheaply made, and hydration compatible didn't mean hydration sleeve, just a couple holes where a hydration tube can be threaded through. For the price I was very disappointed. There are many packs from Osprey,Deuter, Black Diamond, Golite, and others that offer more features, higher quality craftsmanship, more comfort, comparable or less weight, at a cheaper price. Arcteryx is more overpriced fad than function anymore.

4 5


A great alpine pack for long days. Not likely to be very durable, but I wouldn't expect that for such a light pack. It only came with one tool-shaft-Velcro-holder-thingy, which was kind of odd, but otherwise it is well designed.

Cierzo 35 seems to come in one size. What...

Posted on

Cierzo 35 seems to come in one size. What torso length would it fit best?

Best Answer Responded on

You're correct, the Cierzo only comes in one size. To answer the question, it likely fits about a "Regular" torso length the best, and a little outside it. If you are between a 16" and a 21" torso length, this pack should be fine. The thing to remember is that the Cierzo is designed for uber-light endeavors, likely between 5-15lbs. At this weight range, and given the fact that there is no traditional suspension, the issue of correct torso length will not ultimately have as large of an affect as it traditionally does.