An included 1.5-liter reservoir simplifies hydration, and zippered harness pockets keep snacks or phone at your fingertips. Many of the rider-centric comfort, fit and organizational details evolved with input from our Athlete Team.FeaturesHydration sleeve with direct-zip access and hose path for easy loadingIncluded Osprey Hydraulics 1.5 L reservoirDual adjustable/removable chest straps for customized stabilityLightweight magnet on chest strap for easy access to reservoir hoseEasy-to-use slots on front harness for securing sunglassesVertical zippered harness pockets for snacks or phone with foam at base for extra comfortSeparate compartment with removable tool roll keeps tools accessible and organizedTwo large stretch mesh harness pocketsTwo lower stretch mesh harness pocketsSeparate zippered compartment with mesh pocketLidLock bike helmet attachmentGravel-Oriented, Vest-Style FitAccessible, comfortable design with large zippered front pockets for snacks and tech, and easy-to-use slots