This is the pack I use for really big ski tour days, ie Mt. Rainier. Its big enough for a night or two out, also. Great weight distribution, not over tech with features, just a killer, basic design for climbing and skiing huge mountains. I would go smaller for just a day-tour pack, but when you need extra food, gear, and clothes, this is my ideal size.

Its the best backpack that money can buy but you need to know that:

-This bag is specifically design for alpine climbs, its not a hiking bag..
-There are no side pockets, no seperate compartment for sleeping bags..
-No raincoat(since it doesn't really rain in alpine environments)..

If you are an alpine climber, you should definetly get this bag. Don't think about the prize, or don't think it would be inadequate for 5-6 day climbs. Eventhough its just 50 liters, you can fit all your gear clothes and food for 3 day climbs(I'm not sure if i'm packing light or the bag is bigger than tech spec says)If you're going for a longer climb, don't get a bigger pack. Just hang your food or clothes on the gearloops in dry bags. You cannot find a better back system!!

Every single detail is thought for you. You can roll the extanding gear loops and tie them with a velcro band so it won't get stuck in some crack while leading a hard pitch.

You can detach the back panel to use it as a bivy pad. It's pretty comfy.

No pockets might seem disfunctinal, but you don't really need them. Lack of pockets allow you to maximize the use of side gear loops, and keeps the bag in a greater shape.(also makes it lighter).

Stitches look very durable compared to other backpacks. They look like the stitches on quickdraw slings.

and All other great futures that other backpacks have!!

as an alternative : Deuter Guide 45+

Good lightweight pack for a 2 to three day long ski tour or if you are over packed for a serious long day ski mountaineering objective!

I have used this backpack over the last couple years and like its design, lightweight, and the fact that it just feels comfortable on my back. However, I have had some trouble with the connection of the shoulder strap to the frame. Once I had it pull out of the steel link it connects to and managed to put it back, but now it has completely ripped out. I think the light rubber/vinyl connector needs to be toughened up a little bit, but I have only had trouble with one side.

Other than that I really like the pack.

The adjustments have been a little tricky for my daughter, so I recommend several short hikes before you get serious. The features are fantastic. The perfect size for 3 to 4 nights.

An amazing pack you need to buy!!!!