MEDI-VAC Disposable Flex Advantage Suction Liner, Box of 50 - All VolumesFlex Advantage Liners are designed with your safety in kind, The liners are permanently attached to the lids, so no canister assembly required during setup, resulting in a safer way to transport liner for disposal by reducing the risk of splashed and spills. Features: As much as 50% lighter than similarly sized rigid canisters Presealed lids One way valve on patient port Proprietary tandem tube connections Automatic shut off valve Bacterial filter