This is my second backpack. I own a Gregory Shasta for the long hauls, but wanted a weekend/3 day bag, as this is the usual trip nowadays. I have used this pack on a half-dozen outings so far and love it, combining it with lightweight sleeping bag, pad, tent, and stove. I come in at around 30lb with water and a few extras. I love the freedom a light pack gives me. Last fall, when I used this pack for a rainy adventure in the south Siskiyous of Oregon, I pushed the weight a little over 40lb and I met its limit. The pack was uncomfortable. Otherwise, within its design limits, the Z-pack is a great, versatile pack. I love the lid compartment, side entry and outer cargo netting. A rugged, practical, comfortable pack that got me where I was going in style, with energy to spare at trails end--something this 57-year-old backpacker finds increasingly important when sharing the trail with mates 20 years my junior.