Condensation poses risks. It can waste a lot of water, disrupt and occlude flow through the circuit or be aspirated by the patient. Condensation may also colonize with bacteria, thus posing a risk for infection. ResMed has developed a custom hose cover for the SlimLine S9 Series Tubing. Made form insulated nylon material The Tube Wrap zips around the hose to reduce condensation and rainout. Minimizing condensation makes your sleep therapy safer, more successful and more comfortable.