Platy replacement bags for filter system - Platypus 4L GravityWorks Replacement Reservior Kit

These two bags are well made, strong, do not tear easily, and are the name brand platypus bags that we all have come to trust. This is designed to go with the gravity works filter system and will work great as long as you already have the hose, filter, and attachments for both the clean and the dirty bag. This system doesn't contain a way to connect hoses to bags. You must already have them.