Description of Camelbak Vantage 30 100oz Pack The Vantage 30 is CamelBak's first outdoor pack to incorporate the D.V.I.S. Back Panel Technology: a dynamic, self-adjusting, ventilated panel that moves the pack away from your back. Designed to carry loads up to 25 pounds, the Vantage 30 comes in two torso sizes - medium and large. Features: OMEGA HydroTanium reservoir with a lifetime warranty CamelBak D.V.I.S. back panel offers ultimate ventilation with a dynamic, self-adjusting fit Dynamic suspension harness and removable waist belt maximize load stability Large main compartment with weather-resistant zippers External zip pocket with key clip and organizer for essentials Stash pocket on the waist belt for access to snacks and essentials on the move Medium fits 18" - 20" torso Large fits 20" - 22" torso