Platypus Big Zip LP
Here's what other sites are saying:
Nothing makes hydration easier or more user-friendly than the Big Zip LP Reservoir. Platypus has made their best reservoir even better with a new low-profile design that's sized and shaped to make your pack fit better. To meet their high standards, they have developed a unique reservoir by laminating durable exterior films and taste-free food-grade liners.
The Platypus Big Zip LP Reservoir makes hydration easier. The taste-free and BPA-free reservoir comes with an easy-to-clean and easy-to-fill wide-mouth opening with a fast and secure Slidelock closure. A low-pro design rides flat in the back panel of most any pack and a quick-release hose and shutoff valve make drinking and refilling easy.
- Mountain Gear