Breathing hoses are compatible with all 3M™ Versaflo™ air supply headsets and units; a disposable cover for the breathing tube is also available to assist in cleaning and decontamination operations; The BT-20S is a small and light breathing hose that is easy to wipe down; the breathing hose connecting the air source and the headset must ensure that clean air enters the headset reliably and without restriction of flow.