Provent sleep apnea therapy is a simple and effective alternative to the CPAP mask. The small, hypoallergenic nasal device uses the power of your own breathing to create EPAP and keep the airway open. If you are suffering from sleep apnea and want to try something different than a mask, the Provent device might be the perfect option for you. Try a 30-night starter kit to experience the benefits of easy breathing and a great night's rest!