Designed for riders who minimize bulk but aren't willing to sacrifice preparation, the Osprey Seral 7L pack provides just enough space for the essentials. The included Osprey Hydraulics 1. 5L reservoir features a magnetic bite valve to ensure you can access your water single-handedly and won't have to endure a drippy valve throughout your ride. The Seral's main compartment provides plenty of space for your spare tube, pump, tools, and other essentials, while the hip belt pockets secure your snacks and energy gel for easy access. The ErgoPull waist belt customizes the fit, while compression straps eliminate excess space and therefore reduce shifting and bouncing as your ride. The Airscape backpanel creates structure and leaves space for air to flow, keeping you cool as you crank up hills and fly back down.