The Osprey Hydraulics reservoir is now entirely designed and manufactured by Osprey, carrying forward key innovations while offering major improvement to many features. Combined with excellent reservoir to pack integration, superior technical features and the best gender specific pack to body fit and performance available, our hands free hydration program takes another giant leap. Easier to handle when filling and loading into a pack. Contoured backer plate preserves pack fit and comfort. Magnetic bite valve attaches to sternum strap. New Metallocene PE high strength taste free film BPA PVC free. Anti microbial formula to prevent bacteria mold. New 34 turn cap quick and secure openclose. 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.