Overview: The Rio II Nasal Pillow Mask from React Health combines innovative design and convenience for a restful night's sleep. This fitpack comes with three nasal pillow cushions in sizes Small, Medium, and Large (one of each) and headgear to ensure you can find your perfect fit for increased comfort. Features: The nasal pillow snaps into place for easy removal or change. The mask frame has a unique vented rotating ball in socket swivel giving you a full range of motion and ideal for any sleeping position. The minimal and ergonomic design of the Rio II Nasal Interface allows an open light of sight, ability to wear glasses while on, and only requires two adjustment points on the headgear. Soft sleeves cover the cpap mask frame that touches the cheeks for added comfort.