ITEM NAME:10Pcs Silicone Night Mouth Guard Clenching Grinding Dental Bite Sleep Gw Features: 1. Made of food-grade silicone, safe, no toxin side effect, safe for using it. 2. EVA thermoplastic material, high transparency, better to fit. 3. The mouth trays can be formed repeatly. 4. Great to prevent teeth grinding at night and whiten teeth. Specifications: Material: EVA Size: Approx.6.5x5cm Color: Clear Package included: 10pcs * mouth guard HOW TO USE IT? 1.Place the tray into hot water about 70Â °C for 10-15 seconds to soften and remove from the water 2.Place the trays into your mouth and press the bonding surface of tray and gum. The tray is now moulded 3.Cut the extra at the impressed gum-line and finish making the tray Notes: 1.If the mouth tray is not made well, you can repeat the process for the second mould 2.Please clean the tray with water before using 3.The replacement time of the trays is 3-4 months 4.It is normal to feel discomfort for the first time to wear the tray. You will get used to it after several times.Great to prevent teeth grinding at night and whiten teeth. If the mouth tray is not made well, you can repeat the process for the second mould. Place the trays into your mouth and press the bonding surface of tray and gum.