Osprey Packs Inc. Hydraulics 3L reservoir Features: New Metallocene PE high strength & taste free film (BPA & PVC free) Anti-microbial formula to prevent bacteria & mold New 3/4 turn cap quick and secure open/close. Wide mouth opening provides easy fill & access for cleaning New lightweight, low profile handle for easy fill and pack insertion with dual sided hose exit New direct welded HydroStatic™ plate maintains low & wide reservoir profile Anatomical shape keeps water weight steady and close to the body Magnetic bite valve with included sternum strap magnet Built in 180 degree pivot shut-off valve New flexible 1/4”/6.35mm hose for faster water flow