If you have problem with bruxism while sleeping at nighttime. You can use our mouth guard to prevent your teeth (tooth) in your sleep. If you want to whiten or bleach your teeth, you can also use our mouthguard as a teeth whitening trays along with whitening gel in whitening or bleaching process. Whether you are men, women, mom or dad with a child, teen, kids, children, or teens with a small or large mouth, if you have teeth grinding problems, our nightguards are the best fit for you and your loved ones. You can easily mold and customize the gaurds right at your own home with a boil water. It is adjustable to custom fit your mouth since It can be molded and remolded.Features:1. Three-stage physical correction therapy will provide 3 different hardness braces to correct crowded mild dentition, dislocation and uneven teeth step by step.2. Soft and flexible food grade TPE material, odorless and non-toxic, can improve orthodontic rebound with enhanced wear comfort and fit, widely suitable for different people.3. Each dental brace is individually stored in a high quality case for carrying convenience and improved hygiene, and the transparent color appearance will enable invisible looks to bring your confident smile back decently.Specifications:Material: Food Grade TPEColor: TransparentSuitable Age: AdultPhase: Phase I(D1), Phase II(D2), Phase III(D3)Instructions for Three Stages Use:The First Stage(D1): soft; adapt to a few minutes for the first use, wear 12 hours a day after adaptation, use time 1-2 months.The Second Stage(D2): medium elastic hardness; suitable for mild and moderate teeth, insignificant, can be used directly, use time is 2-3 months.The Third Stage(D3): A stiffer material; suitable for further aligning the teeth or used as a holder to limit tooth movement, use for 3-6 months.Kindly Noted:1. Allow yourself to adapt for a period of time, such as 5-10 minutes;2. If you feel uncomfortable, you can take it off first, take a rest and then wear it;3. Don't bite too tight at the beginning, slowly increase the strength of the bite;4. Wear 1-2 hours a day after adaptation, and then extend the wearing time.How to Use:1. Hold the mouthguard with massage point down.2. Put the braces in your mouth and keep your tongue in the position of the tongue block.