SmartGuard's Anti-Snore Device is designed to advance the lower jaw forward to open the airway while you sleep, which reduces snoring. This well-proven design (mandibular advancement devices) opens the airway and decreases the tissue vibration due to a narrow airway. Key Features: * Customizable at home. * An upper and lower tray is connected via Advancement Bars. * The trays are customizable to the users arch shape. * Includes 6 Advancement Bar sizes, varying in increments of 1mm in length, with up to 6 mm of advancement. * This design allows the jaw to open vertically, which allows for more airflow and comfort. Simple to useComfortable and can be adjustedEffective solution compared to other devices