The insulated tubing cover is made of fleece material on the outside and nylon material on the inside. It maximizes the retention of heat in the tubing, reduces rainout in the tube, decreases the noise of the tubing and the soft material enhances your comfort when the tubing comes into contact with the skin. The cover easily slides over a 6 foot CPAP hose and fastens with a nylon cord and Velcro. This item not covered by insurance
