Philips Respironics® Amara™ Full Face CPAP Mask Assembly Kit is compatible with all sizes and types of Amara cushions. The Amara Full Face Mask is easy to clean and maintain due to its minimal part design. Adjusting is a breeze with the Amara Full Face CPAP Mask with a forehead support that ensures proper seal for optimum sleep apnea therapy. Two styles of Amara cushions are available from Philips Respironics. The Silicone Cushion is a traditional seal style that uses two silicone flaps to create and maintain a seal. The first flap provides support and stabilization of the mask. The second flap is responsible for making the Amara Full Face CPAP Mask seal to the user's face.The Gel Cushion is designed for comfort and provide a contoured fit. The soft gel cushion features two flaps as well with the first flap conforms the user's face and the second larger flap stabilizes and supports the seal.