Designed for extended outings and prepared-for-anything types, this pack holds whatever you need to support your two-wheeled habit in all seasons. Smart compartments keep your riding layers, pump, tubes, and the included tool pouch stable and centered. The adaptable Shift RS stability belt keeps the pack in the perfect riding position, while the EVAP moisture wicking back panel keeps you cool and dry in any climate. The Avos 15 includes an extra quick-access pocket as well as Gregory's 3 liter 3D Hydro Reservoir.SHIFT RS SUSPENSION: Adjustable RS (Ride Stability) hipbelt stabilization system. The hipbelt can be shifted vertically to ride higher or lower on your back to provide extremely stable, no-bounce performance. This quick customization of the stabilizer belt allows you to match your fit preference to your individual riding style and trail grade.EVAP MOISTURE WICKING TECHNOLOGY: Low-profile ventilated back panel provides incredibly cool and comfortable riding performance in any climate.3D HYDRO RESERVOIR INCLUDED: Featuring Gregory's proprietary 3D QuickDry soft-molded technology, integrated drying hanger and anatomical fit.QUICK ACCESS HYDRATION SLEEVE: SpeedClip mounting system allows one-handed, snap-and-go reservoir installation and stabilizes the weight in the center of your back.MAGNETIC STERNUM STRAP: Allows for one handed magnetic buckling of strap and integrated magnetic linkage for the DryLock bite valve.REMOVABLE ZIPPERED TOOL POUCH: Included tool pouch with a dedicated, no-bounce storage pocket within the main compartment to eliminate bounce and protect tools.CRASH PAD PROTECTION POCKET: Pocket with protective foam for valuables you want protected from impact and weather exposure.QUICK ACCESS POCKET: Additional organization for essentials.BIKE-SPECIFIC ORGANIZATION: Dedicated pockets and sleeves for tire and shock pumps, spare tubes, energy bars, etc..SUNGLASS QUICKSTOW SYSTEM: Sunglass storage system on shoulder harness for quick, secure and scratch-free access to your shades without taking the pack off.DUAL HIPBELT POCKETS: Quick access to phone and energy bars on the trail.SAFETY LIGHT LASH: Lash point on front of bag for night or urban riding.MOLDED WEBBING KEEPERS: Keep straps quiet and out of your way on the trail.STRETCH MESH STUFF POCKET: Gear overflow and organization.COMFORT-GRIP ZIPPER PULLS: Custom molded zipper pulls.