Arc'teryx Cierzo 18


Weight 265 kg / 9.3 oz
Capacity 18 L / 1098 cu in
Materials 100D Invista HT Mini Ripstop™ with Silicone and PU Coatings, 210D Invista HT Ripstorm™



Great minimalist day pack, suitable for short summit…

Rating: rated 4.5 of 5 stars
Source: bought it new
Price Paid: $39.99


Great minimalist day pack, suitable for short summit bids, bicycle commuting, and day-tripping from base camps.


  • Super lightweight
  • Well made
  • Good access
  • Easy to organize


  • Waist belt is so short as to be unusable

I was looking for a small capacity daypack for bicycle commuting. High on my list was finding a pack that would mount my flashing taillights so they are clearly visible. I ran across this pack on sale, and decided that it would fit the bill.

First off, let's look at what this pack doesn't have. There is no "suspension" to speak of... no foam back panel... the shoulder straps are 1 1/2" webbing with no padding. Related to this is the one negative I have about this pack. The waist belt is so short as to be unusable. I can't see that anyone with a waist size larger than 32" would be able to use it. Don't quite understand the logic around this.

Despite the lack of a proper suspension setup, this pack is quite comfortable with the kind of light/compact load that this pack is designed for. For me on my bicycling commute, that means lunch, a shirt or wind jacket, and a few bike tools. With a large main compartment, a small internal pocket, and a large zipper access front pocket, there are plenty of storage options.

One of the features I really like is the gear attachment loop which runs across the entire width of the pack. It has a plastic sleeve over the webbing strap, which is very sturdy. My bike taillights clipped easily onto this, and are easily visible no matter how much or little there is inside the pack.

The pack can be packed inside its front pocket, and packs down small. I have taken it on several backpack trips, and used it as a day pack for day trips from basecamp.

The pack is very well made, despite the lightweight mini-ripstop fabric. The fabric is coated polyurethane and silicone coatings, and access is through water-tight zippers, so the pack should withstand a fair amount of rain (though with our current drought conditions, I haven't had the chance to test that theory). As with most Arc'Teryx products, the craftsmanship here is superb, and should last a long time.

All in all, I am very pleased with this pack. I can see using it for much more than what I initially purchased it for. 


Overall an excellent day pack/summit pack/climbing…

Rating: rated 4.5 of 5 stars
Design: cinch-top "lead pack"
Size: 18 L
Number of Pockets: 1
Max. Load Carried: 15 lbs
Height of Owner: 5'10''
Price Paid: $49

Overall an excellent day pack/summit pack/climbing pack. Nothing but a well-made sack here from the fine folks at Arc'teryx.

Lightweight (283g w/ sternum and waist straps, of which are both removable), durable and highly water repellent. Also has one outer zip pocket in which the bag stuffs into itself for compressing if need be. Well done if you aren't carrying much more than 10-12 lbs., depending on individual thresholds. In regards to colors, it also comes in black.

Cons: the removable waist belt sits fairly high due to what I think is the small nature of the bag. I don't use it anyhow, but if one were so inclined it may be troublesome. (it weighs 30g)


Amazingly light, clever construction with state-of-the-art…

Rating: rated 4.5 of 5 stars
Design: Rucksack
Size: 18 liters
Number of Pockets: 2
Max. Load Carried: 7-8 kilos is okay
Height of Owner: 190 cm
Price Paid: $50

Amazingly light, clever construction with state-of-the-art materials. The particular colors chosen by Arc'teryx make you stick out like a neon unicorn in the woods, but, hey, a small price to pay for such innovative technology.

When most manufacturers (with the possible exception of some GoLite and Black Diamond models) have gone more and more complex over the years -- adding zippers, straps, mesh pockets, key clips, and on and on -- Arc'teryx tries to hold the line with basic, functional, and oh-so-high-quality stuff. Good on them.

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