On an extended weekend alpine ascent, every ounce of weight is scrutinized and versatility is a necessity. The Arc'teryx Khamsin 70 is a well balanced midsized backpack that exceeds these requirements. Loaded with alpine features and highly modular, the Khamsin 70 can be expanded to support a monster payload, and then stripped down and compressed for light forays or a summit bid. When fully loaded, the Vframe suspension, removable aluminum stays, pivoting thermoformed hipbelt, and removable dual density framesheet pack a whole lot of carrying comfort. Strip it all down and it converts to a summit pack with just the necessities to tag the top.
Suspension has issues
Overall, it's a nice pack. It looks like one person designed the pack and one person designed the suspension system. I bought this based on the bells and whistles vs. weight. The pack itself I would give 5 stars. The suspension is a different story. I am a solid medium according to their sizing. (My back measures 19.5". 18 - 21 is a medium) Here are the problems: I can't get the shoulder straps to sit tight all the way around my shoulder. There is not an adjustment where the shoulder strap attaches to the top of the pack. I can't adjust the pack so the load lifters are more than about 20 degrees. Even with these problems, the pack still handled quite well with 55 lbs in it on steep terrain. When I got to the top of the trail, I took the pack off to dump 4 gallons of water. I noticed the stays had worked passed the velcro straps that held them in. This slid the top of the pack down 3-4 inches below the stays. I fixed this and descended the trail (pack now weighs about 25 lbs). After the 1.5 mile decent, one of the stays had worked passed the velcro again. I contacted Arc'teryx and they confirmed the installation of the stays. Being I bent the stays, I cannot return the pack, otherwise I would have. Now I'm trying to hold the stays in with plastic one way ties. Something I shouldn't have to do with a new pack carrying this kind of price tag.