The Replacement Cushion for the AirFit N30i Nasal CPAP Mask is available in four color-coded sizes to accommodate a variety of face shapes and nasal structures. The sizes available are small, small wide, medium, and wide. The replacement cushion is made of silicone and free of rubber latex or other allergens and is only compatible with the AirFit N30i Nasal CPAP Mask. This item for purchase is only the replacement cushion. The complete ResMed AirFit N30i mask system is in the freedom category, a nasal mask providing under-the-nose coverage with a silicone cushion. The new soft, flexible silicone cushion comfortably adapts to your movements. This mask's top-of-head connection keeps air tubing out of your way for freedom of movement, ideal for side sleepers, stomach sleepers, and frequent rotators. The nasal cradle cushion sits comfortably under the nose rather than over it. The new QuietAir™ diffused venting technology breaks up exhaled air for a quiet experience. It's also perfect if you wear glasses. The slip-on design makes it simple to put on and take off. The quick-release elbow allows you to get up and disconnect without removing the mask. This item is the ResMed AirFit N30i cushion only. This purchase does not include the AirFit N30i headgear or mask frame system. A prescription required for 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.