Free Shipping & Returns!
No minimums, no special codes, just free shipping all the time. Only within the continental US. Still got questions? Check out the Shipping FAQs.
Curbside & In-store Pickup
Simply choose pickup at your store under shipping options at checkout.
Introducing the Big Zip EVO—the latest evolution in taste-free hydration. The Big Zip EVO delivers a significantly higher flow rate than previous Platypus reservoirs and a host of new features, making it a great option for backpackers, hikers, and mountain bikers.
- Secure SlideLock: Slides both directions to easily open, securely close and fill reservoir.
- Handy Pincher Grip: Allows for easy one-handed filling.
- High Mount Quick-disconnect: Offers fast, easy access—no more digging down in your pack.
- Leak-proof Shut-off Valve: Instantly stops flow and offers reliable stowing.
- Semi-rigid Center Baffle: Offers low-profile support and makes for easy cleaning and drying.
- HyFLO Self-sealing Bite Valve: Improves flow along with new, larger 5/16" drink tube.
- Funk-free: Embedded Silver-ion protects clean water from mold & bacteria.
- Pure Platy Experience: All materials are certified taste-free, BPA-free, BPS-free, and phthalate-free.