One way valve for inflation and deflation of cuff Large pilot balloon clearly shows when cuff is inflated An intubation Depth marker is located 3cm proximal to the cuff to assist in the accurate placement of the tip within the tracheal Ivory PVC reduced risk of trauma to the nasal passage Large cuff diameter offers an effective seal Intended to reduce movement relative to trachea during ventilation When deflated, cuff conforms closely to tube which is intended to reduce the risk of trauma during intubation and exudation The material is much softer than the normal one