Platypus Big Zip Ii - 1.8 Litre Hydration Pack.
The Big Zip II Platypus 1.8 litre is loaded with smart features, such as a drink tube and reservoir lined with polyethylene to create a completely taste-free system and resist bacterial growth.
A HyperFlow bite valve offers the highest flow rate of this field on the market. The Big Zip II Platypus boasts an ergonomic shutoff valve angled at 90º for no-hassle, hands-free hydration. A wide opening and new rounded corners leaves filling and cleaning easy while the secure zip-track seal prevents accidental spills. A good choice for active outdoor activities such as running and cycling.