O'Neill HyperSak BackpackO'Neill HyperSak Backpack The internal mesh pocket is ideal for storing smaller items such as your keys so they don't get lost amongst the rest of your belongings in the bag while also keeping them accessible. The exterior towel clips are a thoughtful addition allowing you to carry your towel or wet gear without taking up valuable space inside the backpack. The epitome of convenience and protection this handy backpack ensures your gear stays securely