What makes the M.U.L.E.® 12 Hydration Backpack redesign so exciting? For starters, it's the perfect size, comes with premium hydration and has all the features to make every bike adventure awesome. In addition, it utilizes body-mapping technology, for a tailored fit and excellent cooling. Our trusty reservoir with Quicklink™ System delivers easy-access, massive hydration. Repurpose Gold Sustainability Badge: Made with recycled materials, made with safer chemicals, and designed to preserve resources and diminish disposables. In addition, it has smart storage options, with an overflow pocket for an extra layer or wet rain jacket. Finally, it's got a removable stability belt for added flexibility and comfort.