The ResMed Mirage Quattro Cushion is the replacement cushion and clip for the Mirage Quattro Full Face CPAP Mask and comes as a single mask cushion in your chosen size: extra small, small, medium, and large. This item for sale is only the replacement cushion and clip for the Complete ResMed Mirage Quattro Mask System, a full face mask, covering mouth and nose, with a silicone cushion. It sports Spring Air cushion technology, designed to accommodate a range of movement during sleep. The forehead support design is a predecessor to today's popular AirFit series. Prescription required for complete mask system. This item for purchase is the ResMed Mirage Quattro mask cushion and clip only. It includes the full face cushion and clip for the ResMed Mirage Quattro full face CPAP mask. This purchase does not include the Mirage Quattro headgear or mask frame system. A prescription is required for the complete mask system. Every day, Resmed employees come to work with a focus on building and supporting technology that helps people live healthier, happier lives. It began over 30 years ago with the invention of a machine that helped people breathe easier and sleep better. It continues today with digital health solutions that help keep people out of the hospital. We're leading the way in cloud-connected medical devices that transform care for people with sleep apnea, COPD, and other chronic diseases. Our comprehensive out-of-hospital software platforms support the professionals and caregivers who help people stay healthy in the home or care setting of their choice.