Reliable material: Teeth mouth guard for teeth grinding is made of silica, safe and soft, durable and reusable, with high fit, can provide comprehensive oral protection, offering you a comfortable experience. Reusable: Our teeth guard for night grinding are reusable, after usage brush with your toothbrush, toothpaste, Rinse, dry, and store. The normal use time of the mouth guard is 3-4 months, please replace it in time. Widely Used: Wear during sleep as a night guard, Protects your Teeth while playing sports, Teeth Protector can also be used with Whitening Gel Kits to whiten your teeth. Mouth trays are suitable for Anti Snoring, molars, tooth whitening; and is conducive to dental health, reducing noise and improve sleep quality. Easy to use: Place the teeth guard for night grinding in warm water for 5 - 10 seconds, then take it out and put it on; The trays will automatically shrink to fit with your teeth; It can be operated at home, simple and fast.Note: Soaking in boiling water for too long may cause excessive shrinkage of the dental tray. How to Use 1.Put the teeth guard for night grinding in Boil Water for about 5~10 seconds. 2.Place teeth guard for night grinding in cold water for 2~3 seconds. 3.Remove from water, Put in your mouth. 4.Bite the teeth guard (more than in mouth for 10 seconds) 5.Use fingers to press mouth piece against your teeth. 6.If you do not get a tight fit repeat the procedure. Specifications: Material: silica Color: teeth guard for night grinding: transparent Box: blue Package: 4 x teeth guard for night grinding 1 x Love storage box Warm note: 1.Manual measurement, please allow slight errors on size. 2.The colors may exist slight difference due to different screens.