Osprey doesn't mess around when it comes to keeping us comfortable on the trail, and that's evident in the design of the Hydraulics LT Hydration Reservoir. Made with twin-welded chevron baffles, this reservoir limits sloshing, stabilizes water, and maintains a flat profile in our pack. Osprey equipped the Hydraulics LT with a convenient Slide-Seal closure for easy-filling at the kitchen sink or spring, and the magnetic bite valve ensures we don't lose any water until we're good and ready to wet our whistle.