This extra-large reservoir is equipped with a backerplate to create a low/wide profile, maximizing the packs fit and making it easy to position a 100% full reservoir into your pack. A magnetic, one-hand bite valve keeps water close by.Redesigned from tip to tail, the 3-liter Hydraulics reservoir features innovative and ergonomic improvements that make it easier to carry, fill, load up and use-whether you're buzzing around town, travelling or hitting the trails. This version features a lightweight yet sturdy backer plate that helps reduce bending or buckling while loading, making it ideal for internal or external pack hydration sleeves.Features:Compact bite valve provides excellent water flowThumb-operated on/off lever is easier than ever to operate with one handCompact Slide-Sealopening aids one-handed filling, removes bulkiness, slides into packs easier and seals securelySeamlessly integrates with new HydraClip reservoir hanger in packs for secure carryExceptionally secure hose mag