Keep on the trail longer with this Camelbak Vantage 30 pack that boasts an ingenious suspension system and ample water storage. Camelbak D.V.I.S. back panel is a Dynamic, Ventilated, Integrated System pronounced dee-vee-uhs, as in deviously clever design. Totally integrated design keeps the hydration at the center of gravity to optimize fit and stability. Multidirectional ventilation maximizes cooling airflow and provides a solution to sweaty-back syndrome. Padded shoulder straps offer a comfortable fit over the long haul Dynamic Suspension harness keeps the pack stable as you move. Slider SternumStrap lets you adjust the location of the strap up and down for a personalized fit. Waistbelt wraps around hips for carrying comfort and stability stash pocket on waistbelt for storage and access to snacks and small essentials. Large main compartment uses a water-resistant zipper to keep gear dry. External zip pocket has an organizer plus a key clip for small essentials twin side pockets hold beverage bottles, multi-tool, GPS and other often-used gear. Dual compression straps hold load securely. OMEGA HydroTanium wide-mouth reservoir is built with a rugged polyurethane film with superstrong tensile strength and burst resistance. HydroGuard technology embeds an FDA-approved silver ion compound into reservoir film and delivery tubes to inhibit bacterial growth. Big Bite valve is ergonomically positioned for easy drinking HydroLock valve securely shuts off water flow. Full-zip panel access makes it easy to load a full reservoir into the pack.