Specification :

Model No.: YZ-MTH002
Feature:
1) Name: Silicone Mouthpiece;
2) Made from 100% food grade silicone, high transparent, good quality.
3) It is double sides mouth tray with double arch. Thin and transparent so that easy to let the light whiten your teeth.
4) Humanise design of the two produching to rest your lips when open your mouth.
5) You are welcome your great idea for your order.
Note: We are the only supplier in China here. It is patent product. If you saw the same or similar one in China here is the pirate.