Outdoor Products Cyclone Hydration Reservoir, 2-Liter Storage 2-liter reservoir fits in a wide range of hydration packs; includes hose and high-flow bite valve with twist shutoff Made from odorless, tasteless, BPA-free material for fresh-tasting water throughout your journey Large opening for easy filling from even shallow sinks; low profile helps bladder ride flat in your pack Simple quick-connect latch for easy detachment for cleaning Backed by the Outdoor Products Plain + Simple Lifetime Guarantee