The Mammut Spindrift 14 Backpack might be smaller than the rest of its clan, but it's full of organizational features. The spacious hip pockets can stash the likes of gloves, snacks and a cell phone, while around the back are loops for an ice axe and poles. There's room for a reservoir too, but the coolest addition is an integrated stowable wind jacket to fend off the chills when you stop for a break.