The Osprey Kode ABS 42 Backpack is big time ski season pack with a serious trick up its sleeve the standard thermo molded back panel zips off and allows you to attach an ABS Vario Base Unit, transforming the Kode from a top shelf ski pack into a fully functional airbag pack in seconds. If you're staying away from high risk terrain or otherwise don't want the airbags, the Kode's standard LightWire frame, HDPE framesheet, ErgoPull waistbelt, and EVA foam shoulder straps comfortably carry up to 50lbs, enough for overnight hut trips, and the Kode's top and back panel access options make it easy to fish out gear from the deepest, darkest recesses. No one really likes to bootpack, but sometimes its necessary, and the Kode's kitted out to make things on the booter go a little more smoothly. It offers diagonal and A frame ski carry options, a vertical snowboard carry, and a hideaway helmet carry system so it's easy to throw your gear on your back and start marching up that gnarly couloir. There's a dedicated avy pocket to keep your probe and shovel easily accessible, along with a rope compression strap under the lid and an insulated hydration sleeve in the shoulder strap, so your special sending juice won't freeze during those five a. m. alpine starts.