I've used this once now at a local crag and it performed well carrying a 60m rope, rack, shoes, harness, food and water. I had about 30lb in it with a 20 minute approach and it worked well. The waist and shoulder straps are adequate but would need to be beefed up for much longer days. Since I am not getting out multiple times per week, the lighter construction is fine for me. I am backing up the zippers by adding some external strap-buckles which is easy thanks to the extra webbing tie-ins.