Platypus Big Zip Evo 2L/70oz Acme you need a water filter

you need a water filter for all conditions - clear or dirty water the Katadyn Vario is adjustable for different conditions

PFC-free product that is manufactured in an environmentally friendly way and under fair production conditions

Features Offset shoulder seams designed to increase comfort and minimize chafing while wearing a backpack

Handy Pincher Grip: Allows for easy one-handed filling

Four exterior zippered pockets

Platypus Big Zip Evo 2L/70oz Acme you need a water filterIntroducing 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