This replacement cushion is designed for use with all SleepWeaver Elan Soft Cloth CPAP/BiPAP Masks. The Elan's cloth cushion inflates like a balloon during CPAP/BiPAP therapy pressing gently against the face to create a soft, leak free seal with no pressure points. Because SleepWeaver cloth is breathable the mask feels cool and dry to wear and the fabric feels natural on the skin unlike the plastic and silicone of most CPAP mask solutions.