Optipillows EPAP Mask is a nasal mask that uses expiratory positive airway pressure for the treatment of snoring. Optipillows is the only EPAP product on the market that offers adjustable resistance. Published studies indicate Optipillows produces a range of pressures from 1.5 to 14.5 CMH2O. Dr. Sal T. Hakim, creator and founder, has spent his career as a sleep educator, researcher, and practitioner. Optipillows was the result of his desire to create an EPAP device that was not only effective, but comfortable, affordable and reusable for users. The Optipillows patented valve allows air to flow in normally during inhalation, and upon exhalation redirects air to the side vent. The opening in the side vent can be closed or opened incrementally to increase or decrease the amount of pressure based on the users individual needs. No snoring...no noise...just the sleep you (and your spouse) deserve. For more information, reach us at www.optipillows.com on our Contact Us tab. To stay up to date on all thats going on at Optipillows, subscribe to our other social media platforms: YouTube, Facebook, and Instagram.