Features: 1. High-quality and safe material. 2. Made of moldable material to fit teeth perfectly. 3. Soft silicone, comfortable to wear. 4. Easy to clean, reusable, compact and portable. How To Use: 1.Put mouth guard in the hot water for 15-20 seconds. 2. Pick up the mouth guard and put it on your teeth. 3. Close your mouth and hold your tongue against the mouth guard for about 10 seconds. 4. Clean it and put it back into the protection box after use. Warm Tips: 1. Make sure to use a thermometer to measure the water temperature at 176-185 F, if too hot it will be too soft, or too cold it will not be soft enough. If the time exceeds 20 seconds, it will become too soft. 2. Please read the Instructions carefully to help you make the best shape for you.