The deuter Airstripes back system gives this biking pack a solid, wrapping fit, while the set-up is truly versatile: with a dedicated hydration compartment, cell phone pocket, tool organizer, two hip fin pockets, and two stretch side pockets. The volume can also be extended for extra space. And there’s provision to attach a half-shell helmet using attachment clips on the front of the pack, while the side compression straps can be used to attach a full-face helmet.