The Anti Snoring Mouthpiece Device is a custom fitting, adjustable insert that advances your jaw forward to hold your airway open, allowing you to breathe easy and sleep in silence. Safe, effective and FDA cleared, it can be easily adjusted for a custom fit and is totally flexible to match your mouth movement. Features a dual-layer design, with a soft inner layer for a comfortable fit against the teeth and a harder outer layer for durability. Download the free optional app for nightly reports that help you discover the causes, factors and solutions of your snoring. One size fits most.