FunctionWhitening tooth tray help you whiten your teeth and bloom your charming smile after wearing for a period of time; Prevent teeth grinding and protect dental health; Protect teeth in an all-round way to avoid tooth loss caused by foreign object impactSafe Material sleep mouth guard is made of silica gel, safe and odorless, durable and reusable; It is precisely manufactured for your right fit to provide thorough oral protection. The use time of the denture tray is 3 - 4 months, please replace it in timeComfortable & MoldableOur teeth whitening tray is soft enough to be customized into various kinds of shapes to fit different mouths; Meanwhile, it make a balance between thickness and comfort; It not only provides enough thickness and support to prevent your teeth grinding, but also ensure safety and light weightWide ApplicationOur mouth trays are suitable for bruxism, molars, sports, athletes, tooth whitening; Relieving bruxism, which is conducive to dental health, reducing noise and interference to others.Easy to usePlace the teeth bleaching trays in warm water(158-176/70-80) for 10 - 15 seconds, soften the teeth mouth trays, then put it into your mouth and bite down to make it consistent with the shape and contour of the teeth and mouth.