Platypus GravityWorks Universal Bottle Adapter Gear Aid No batteries required with this

No batteries required with this compact

Six ball bearings and one roller bearing combine to create the ultimate in silky smooth operation

We use this material in different strengths

sherpa fleece-lined collar with center front rubber-coated snap closure

Shirttail hem keeps your shirt in place

Platypus GravityWorks Universal Bottle Adapter Gear Aid No batteries required with thisThe Universal Bottle Adapter is an ultralight, space saving accessory that enables any GravityWorks water filter to filter directly into a wide range of water bottles and hydration reservoirs. Thanks to its modular, direct to bottle capability, the adapter makes it easy to take only the parts you need and save both space and weight by leaving a dedicated Clean Reservoir at home.