Made of food-grade silicone, safe, no toxin side effect. Each size (app): Size: 6.5 x 6 x 1.3cm / 2.55 x 2.3 x 0.51". Great to prevent teeth grinding at night and whiten teeth.
Usage Instructions: 1, Place tray into hot water about 70-80°C(Not 100°C) for 5-10 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. 4, Apply the whitening gel in each tray to whiten your teeth.
Softening Tray: the 80 °C water into the ground vessel, water depth to be able to handle removed after immersion tray and leave in the water outside is appropriate, the denture immersed in water 5 to 7 seconds. (Denture very soft at the moment, so the immersion time not too long, soft denture made in elongation, slightly starts to deform appropriate).
Please clean the tray with water before using. If the tray shape is not made well, you can repeat the process for the second mould.
It is normal to feel discomfort for the first time to wear the tray. You will get used to it after several times. The replacement time of the trays is 3-4 months.