Unlike conventional PVC cannulas, which are hard and create considerable friction and shear forces when dragged across the skin, Comfort Soft Plus is highly elastic and relieves pressure on and behind the ears, thereby preventing pressure ulceration. Whatever they call it, no other soft cannula from any other manufacturer, performs as well as Westmed Comfort Soft Plus. Cannulas in the Comfort Soft Plus Family: * #0536 Harness Only with 2 inch Connector * #0588 Clear in Color, 2 Feet in Length with Standard Connector * #0194 Clear in Color, 4 Feet in Length with Standard Connector * #0556 Green in Color, 7 Feet in Length with Standard Connector * #0567 Green in Color, 7 Feet in Length with Threaded Connector * #0566 Green in Color, 14 Feet in Length with Standard Connector * #0568 Green in Color, 14 Feet in Length with Threaded Connector * #0589 Green in Color, 25 Feet in Length with Standard Connector * #0537 Green in Color, 25 Feet in Length with Threaded Connector