Matthew Rutherfordwrote a review of Patagonia Cragsmith 45L Backpack on June 9, 2019
Familiarity: I've put it through the wringer
I love a lot about this pack. I've used it about 20 days so far this season and have carried it fully loaded as long as 40 minutes or so. There a number of features I love: side pockets, hip belt pocket, padded back and shoulder straps/hip belt, frame sheet, etc. And the zipper back also makes this a really great travel bag as it's essentially a suitcase that's easy to cary. I also love that it keeps its shape well as it obviates the need for a smaller pack when my partner volunteers to carry the rope and I'm only hauling the draws. I can fit 24 draws, a bunch of lockers and slings, 70m rope, helmet, harness, 2 pairs of shoes, chalk bag, wind jacket, and an R1 hoody in the main compartment with only minor stuffing. Then food for the day and incidentals in the top, one liter of water on either side, and my stick clip stuffed in one of the side pockets and behind the compression strap.
As for the purpose of the compression strap other than holding my stick clip, I'm really not sure. I never feel the need to cinch anything down. The only minor grumble I have is that at 5'7" I hit my head on the top of the pack (size S/M) when I look up, especially if I have my helmet on. Similarly, it's not a great pack for scrambling or wedging yourself through tight spots. But it's so minor in the grand scheme of things.