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 mid-sized 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 V-frame 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.