Mountain Hardwear Unisex Direttissima 35 Outdry Backpack Nylon Guaranteed watertight OutDry construction main compartment, rain room tested for 12+ hours Flexible design concept allows removing or adding pack components for optimal versatility Multiple lash points and long compression webbing allow for overloads while effectively reducing volume as needed to keep any size load stable HardWave suspension conforms comfortably to the curve of your back and distributes weight evenly but is removable for carrying light loads Intuitive, easy to secure and adjust ice-axe / ice tool carry system with pass through sleeve to conceal picks