This is the replacement gel cushion and SST flap that fits on the ComfortGel and ComfortGel Blue Nasal Masks.There are three (3) different Frame sizes for the ComfortGel. Only the sizes Small and Medium cushions fit onto the same frame. (see Important Tips for more additional help)Customizable Gel Cushion. As an added benefit, the ComfortGel cushion can be boiled and molded for a custom fit. The boiling process softens the cushion and allows the gel to form around your unique face.

Silicone Cushion Flap. Does your mask get worn and “mushy” too quickly? Use the separate silicone membrane that snaps on over the gel cushion to increase the life of the cushion. The unique Sure Seal Technology (SST) contours and seals around the ComfortGel cushion.