I like this pack, and find the avalung integration well designed. The 22L pack rides well on my 5'10" frame. I agree the 22L version is a bit tight. To remedy that I found an Osprey external crampon bag that had the same buckles as the Covert compression straps and viola! I now have a external compartment for crampons (and/or skins when the main compartment is very full). I attached it vertically on the back which works well as a "beaver tail" like area where I can dump my shell quickly and pull the straps tight to hold it there. Makes for quicker changeovers when doing laps.