Platypus GravityWork 2.0L Water Filter ?. Bottle Kit. Bottle Kit: Minimalist setup uses a Universal Bottle Adapter to connect the system directly to an existing water bottle or reservoir . The minimalist, ultralight and ultracompact GravityWorks 2.0L Bottle Kit uses a simple and easy design to connect the pump-free water filter directly to a water bottle or hydration reservoir, conveniently filtering up to 1.5 liters of water a minute for 1-2 people.
