Anyone used one of these? I can't get to a shop that stocks them to have a look for myself. I've currently got an Arcteryx Miura 45 which is very good but it's just too big. The only thing extra that I can get in it that won't go in a 20 litre bag is a helmet and I would be happy to strap that to the outside anyway. I never put the rope in the pack it feels like too much weight on my shoulders so that's not an issue. I feel that a 25 litre bag would be a little more versatile.
Al