Big thanks to Backcountry Access for sponsoring this avalanche education content. Check out the additional plethora of avalanche safety resources on their website.
(Please note, regarding our use of the Mammut carbon cylinder that’s only retail available in Europe. Quite a few of our readers are in Europe, and the cylinders can be brought to North America from Europe on direct flights. So we chose to configure these packs with the lightest weight option possible.)
Weight 1592 grams with carbon cylinder. Airbag backpack. Need I say more? Sure, it’s a blog, more shall be said.
Ever since Mike Arnold did our initial testing of the Mammut Ultralight 20 RAS (Removable Airbag System) I’ve been eager to configure one of these rigs for my own real-world use. I’m a “normal” user of this sort of rucksack, since my tours are generally more moderate than Mike’s, and I don’t do as much hardcore ski mountaineering as I used to. Well, I got it done — I’ve been out with the little blue fellow for a few days of powder skiing in Colorado avalanche terrain.
Goal was to configure (fancy word for “load”) the Ultralight 20 for a specific style of ski touring. That where you rarely strap your skis to the pack, carry minimal water, and don’t need arctic clothing. In other words, moderate ski touring in terms of weather and objectives. (If a larger pack is needed Mammut boasts their Light 30, which is quite commodious while being reasonable in mass, 1736 without cylinder, 2054 with 318 gram carbon cylinder. **See below for more weight informations.)
I see no problem in using the Ultralight 20 within its design parameters. Meaning moderate ski tours in moderate climate, or perhaps for activities such as heli skiing when you carry minimal gear. The admittedly small volume is inappropriate for anything more.
Further, I don’t recommend carrying skis on this pack. Doing so without damaging the thin fabric would require utmost care with lashing as well a judicious padding, things most people would not have the patience nor time for.
The RAS system is wonderful. For example, I’m thinking for a hut trip I can carry the 30 liter pack on the access trail, with the 20 packed inside sans airbag system. At the hut, switch the RAS to the 20 for day tours. Main takeaway here is that with the RAS removable airbag system, you could own this as well as the 30 liter and swap the balloon plumbing back and forth accordingly. Or just go with the 30 if what you’re seeing here isn’t appropriate for your style of skiing.
The 20 rode well and fit my 180 cm body perfectly. The leg strap has an odd adjustment system that ended up in a big loop when I opted to clip with a carabiner. I taped up the excess webbing with a few chunks of duct tape. Only thing I’d like to see added is a small “sunscreen” pouch on the waistbelt (the 30 does have that feature). Whining and moaning about adding anything more (can’t we have…tool pockets!?) is just futile fighting against what is clearly an ultra-minimalist design philosophy — a build style we’ve been waiting for years to enjoy in an airbag backpack.
(The “worldwide” Mammut aluminum cylinder weighs 656 grams so it comes at a penalty of 338 grams, 12 ounces. That’s major with a pack this light. Further, the worldwide cylinder takes up noticeably more space and probably makes the Ultralight 20 impractical for most backcountry skiers.)
Shopping for Mammut airbag backpacks appears to be confusing, but I found a solid source for the Ultralight 20. Check out this link at Backcountry.com. I couldn’t find the current Light 30 at Backcountry, but did find it on the REI site.