Platypus GravityWorks Replacement Reservior Kit Clear 4.0L Kit. Specifications for Platypus GravityWorks Replacement Reservior Kit: Manufacturer: Platypus Age Group: Adults Color: Clear Features of Platypus 2L GravityWorks Replacement Reservior Kit Choose replacement dirty and/or clean reservoir bags. Unique dual-layer laminate combines a rugged exterior with a food-grade taste-free interior. Reservoirs are interchangeable with any GravityWorks system thanks to quick-connect fitting allowing you to create the capacity you need for any trip. Package Contents: Platypus GravityWorks Replacement Reservior Kit 6.0L Dirty Reservoir With Quick Disconnect 6.0L Clean Reservoir Platypus 3136: GravityWorks Replacement Reservior Kit Clear 4.0L Kit