FEATURE 1.Made by soft and safe PVC material, (no latex ); 2.The contour of mask cushion fits patient's face properly to provide good sealing; 3.Disposable use,reduces the risk of cross infection; 4.Mask (except infant and newborn type) provided with brackets for fixing elastic band, which can be removed easily when it is not needed; 5.meets the standard requirment:ISO5356-1; comply with the evaluation of medical; equipment biology ISO10993; Complies with EU requirement of MDD/93/42/EEC;