Randywrote a review of Arc'teryx Cierzo 18L Backpack on June 19, 2017
Familiarity: I returned this product before using it
The description for this pack indicates it may function as a Summit pack capable of carrying a rope and other gear for a day climb. I found the pack to be too flimsy for that. Climbing gear is heavy. For a pack suited to climbing I think there needs to be a bit more structure/support so that load carries reasonably well and doesn't move around on your back. This pack seemed more suited to carrying less than 10lbs which fits more in the day pack for hiking not climbing.