CamelBak 90302 Omega Water Beast, 50 oz., BlackThe OMEGA® Water Beastâ"¢ Reservoir is the ultimate delivery system for an operator"s water supply. The reservoirâ€TMs proven durability, OMEGA® wide mouth opening, rugged materials ensures the reliable delivery of water during extreme operational situations. Also includes Big Biteâ"¢ Valve and HydroGuardâ"¢ Technology. Our reservoirs are 100% BPA-Free, so you can be worry free.