This is a replacement CPAP cushion for the EasyFit SilkGel nasal CPAP mask from DeVilbiss. This is DeVilbiss’s SilkGel cushion that is ultra-soft and easily conforms to your face for more comfort. This cushion uses a scallop-shaped design that was crafted after a 50,000 person study of different facial profiles. This exhaustive study concluded that the scallop shape is the preferred, most comfortable shape for most people. The SilkGel material is also easy to clean since it prevents facial oils and sweat from adhering to its surface. This also enables the cushion to last longer than your typical replacement CPAP cushion. It is still important, however, to regularly replace the CPAP cushion roughly every 6-7 months.