Big Zip Evo 2.0L baselayers 4 R-value allows adventurers to

4 R-value allows adventurers to enjoy backpacking and camping year round

It’s durable

and ankle zippers with snap closures increase weather protection

Whether you’re planning your first backpacking trip or your next one

Big Zip Evo 2.0L baselayers 4 R-value allows adventurers toIntroducing the Big Zip EVOthe 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. Available in 1. 5L, 2. 0L, 3. 0L and a Lumbar 2. 0L. Secure SlideLock: Slides both directions to easily open, securely close and fill reservoir. Handy Pincher Grip: Allows for easy one handed