Two (2) Stretch Mesh Pockets on Shoulder Straps for Storing GEL Packets And/or Bite Valve Docking StationErgonomically Padded Air Mesh Shoulder Straps for Wicking Moisture Away From the BodyRaised Air Mesh POD Back Panel Directs Airflow Cooling Down the Body While Transporting Moisture Away From Your SkinTailored Paneling to Control Slosh and Bladder MovementLarge Compartment for Stowing Excess Layers of Clothing, Gear and ToolsSmall Compartment With Mesh Organizer for Easy Access to GearElectronics /Personals Drop Pocket on the Top of the BagExternal Bungee Cord System for Overflow Storage Is Removable and Stowable When Riding in Wooded AreasReverse Coil Zippers Help Keep Out Dirt and DebrisWebTECH Feature Safely Secures Excess Webbing Keeping the Rider Safe From Potential Hang-Ups in Wooded AreasReflective Trim Enhances Visibility in Low Light ConditionsStorage Capacity: 400 Cu. In / 6.55 LitersComes With 70 Oz / 2 Liter OGIO Bladder Made From BPAfree Polyurethane Film Protected by Microban Antimicrobial Technology