This unique Under-the-Nose Full Face Cushion comes standard with all Amara View Full Face CPAP & BiPAP Masks. The main body of the Amara View Under-the-Nose Cushion covers your mouth so you can breathe naturally, as needed, with your mouth open or closed. A small, rectangular hole in the top of the cushion allows you to breath through your nose as well. Three cushion sizes -- Small, Medium, Large -- are available to fit a wide range of faces. Any cushion size will fit on any Amara View mask frame; so if you find you want to try a different size you can simply purchase a new cushion rather than having to buy a whole new mask. Cushion size is indicated by a single letter -- S, M or L -- printed on the base of the cushion. MATERIAL Not Made with Natural Rubber Latex. AVAILABLE SIZE(S)Small, Medium, Large. All Amara View Full Face Masks. Not Compatible With Amara Full Face Masks.