We use the finest 22 ounce car bra vinyl available with felt backing. By closing off and reinforcing these openings the body of the mask is kept snug and tight, greatly reducing vibrations and preventing excess debris from getting behind it.
Our bra fastens to your coach using twist fasteners across the top and along the sides. On most Rv’s the bottom edge is secured with our proprietary self-tensioning hooks. After the first application our hooks never have to be reshaped.