GREAT DESIGN: Made of flexible polymers, 6-foot Universal CPAP Tubing delivers a uniform breathing air supply between your CPAP mask and device. COMPATIBLE: for BISTRAS Universal CPAP Tubing is compatible with for Respironics, for ResMed, for Fisher & Paykel, and most for CPAP, for BiPAP, and for Bi-level device brands LONG-LASTING SEAL: CPAP Hose is equipped with standard 22mm Rubber Connectors on both ends, designed to ensure a long-lasting seal and air leaks. OPTIMAL FLOW: With unrestricted smooth interior walls and great rubber connectors, it delivers maximum flexibility, and uninterrupted airflow, and promotes easy cleaning. MOBILITY AND COMFORT: 6 feet in length, it provides ample distance and hose flexibility to increase head and body mobility in bed. Colour:Photo Color Material:plastic Package Contents: 2 x CPAP Hose 2 x Cleaning brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.