1.100% medical grade silicone for superior biocompatibility.

2.Non-epoglottis-bar design provides eay and clear access through the lumen.

3.5 angular lines appear when the cuff is in flat status, which can avoid the cuff to deform during insertion

4.Deep bowl of the cuff provides excellent sealing and prvent the obstruction caused by epiglottis ptosis.

5.Special treatment of the cuff's surface reduce leak and shift effectively