Over 80% of the dry snoring nods mouth breathes! The breath trainer is a tool to close your mouth when you sleep and get the right nose breathing! Prevents Snoring! Sleep sound! Mouths sticky relief. Soft pad with a thickness of 0.04 inch (1 mm) that fits into the inside of the mouth. Gathered construction fits most of the rounding bows; Center guide prevents uncomfortable upper and lower movements in the mouth. By placing the tongue on the tongue upper, the tip of the tongue is suction on the back of the teeth, preventing the tongue from falling out and the airway spreads. Individual Package Size: 2.6 x 5.3 x 1.2 inches (65 x 135 x 30 mm); Individual Package Weight: Approx. 1.2 oz (35 g); Contents: 1 piece; Material: AR-830C resin; Color: Clear (transparent); Durability: Made with materials that are sticky and tear resistant even in resin. There may be individual differences, but it is about 1 to 2 months depending on the use of each night. If it gets scratched, it is easy to tear, do not use small scratches, just replace it with a new one.