Easy to Use, Minimal Parts, Superior Comfort The importance of sleep cannot be overemphasized. It is essential that our sleep provides our body a much needed recuperative phase. During sleep our bodies use this time to repair, and rejuvenate. One can argue that sleep is as important to overall health, as diet and exercise. It is because of this the Eson is the ideal mask for sleep therapy. Simple, yet thoughtful design, as well as minimal parts, allows you to use the mask with ease. Here are a few features that show why the Eson is so popular. ROLL FIT SEAL The Simplus Full Face CPAP Mask single-piece Nasal Seal Cushion rolls softly to auto-adjust during sleep to reduce pressure points on hard to fit areas, maintaining a perfect seal and consistent comfort. The RollFit Seal is the reason this mask provides stability, and consistent seal, even at higher pressures. ERGOFIT HEADGEAR The Simplus breathoprene ErgoFit Headgear is designed to provide soft stability by placing the focus of its anchor-point at the rear of the head, this the headgear to remain stable, even with active sleepers. Smartly positioned velcro tabs & 'Easy Clip' Hooks provide a fast placement and removal without the need of readjustment. Eson has two headgear sizes available: All Small Simplus Full Face masks come with Small ErgoFit Headgear. All Medium and Large Simplus Full Face masks come with Medium/Large ErgoFit Headgear. EASY FRAME The Simplus low profile stable frame system is both durable and minimal in size. Because of this, the Simpus allows for a better line of sight when compared to other full face masks. This feature opens up activities such as watching TV, reading a book, or tablet while wearing the mask. The Simplus mask frame fits all three seal sizes and has an Easy-Clip frame attachment, which makes disassembling the Simplus Full Face mask for cleaning, a breeze. Quiet Intentional Leak Ports The Simplus Easy Frame comes with a Q Cover elbow vent for remarkably quiet operations, and flow diversion, that keeps the air flow away from you, and your partner. The 360 rotating ball-and-socket elbow allows for a free movement and helps manage tubing placement.