When you can’t spare a single drop, pack the North 49 Hydra Sack. This 2-litre hydration bladder has a a leak-proof double shut off valve that you must first pull to unlock and then bite to start the water flowing.

Why choose this hydration bladder?

• Double shut off valve ensures zero water wastage
• Compatible with any 2-litre or larger hydration carrier
• Large lid makes refilling easy
• Accepts most water filters

Why not?

• Hose is not insulated
• Limited to 2-litre capacity

Next level hydration bladder: 3.0 Liter Replacement Bladder with Bite Valve

Pro tip:
The famous adage that you should drink 8 glasses of water a day is not actually based on any scientific study. The amount of water a human needs to survive changes drastically based on the person and their environment. The best way to stay properly hydrated is simply to drink whenever you feel thirsty.