Platypus' premium hydration system is loaded with improved features like our new and easy-to-clean wide-mouth SlideLock™ closure with secondary reinforcement that ensures an easy and solid closure every time. We’ve also added a quick-disconnect fitting so you can remove, clean and refill your Big Zip without re-routing your hose.

• New materials increase durability and flexibility.
• New SlideLock close ensures a secure and easy closure every time.
• Quick-connect fitting allows you to remove from pack without re-routing drink tube.
• New SlimeGuard™ anti-microbial treatment keeps your water fresh and taste-free.
• HyperFlow™ bite valve offers the highest flow rate on the market.
• Ergonomic shut-off valve is angled at 90º for no-hassle, hands-free hydration.

Sizes:

1.8lt, 2lt, 3lt models

Specs:

BPA Notice:

Platypus hydration products are 100% BPA-free, made with a durable, multi-layer laminate of urethane and food-grade, taste-free polyethylene film. Contrary to some reports, a recycling code #7 does not necessarily mean the plastic contains BPA. A #7 designation means that it simply doesn’t fit in codes #1-6. Platypus products are made with a laminate film, which is why they are designated #7, but they do not contain BPA or polycarbonate.