Set of 2 mouthpieces for teeth whitening and application pencil, Beconfident, 1 pc. The set of original thermoformed mouthpieces Beconfident is simple and easy to use. It contains two bottles and an applicator for the teeth whitening gel. Place them in warm water and then mold them to the shape of your teeth, giving you a precise fit when you complete the whitening process. How the product works: In order for the gel to be the most effective, it is important to have close contact with the surface of the teeth. That's why it's important to shape the gutters using hot water (approximately 80 degrees) per gutter and perfect fit. As the gutters are shaped, they can be stored and reused over 100 times, with any whitening gel available. Material: The insoles are made of soft EVA (Ethylene-Vinyl Copolymer). This product is clinically and dermatologically tested and approved not to be harmful to public health or the environment. This is a CE approved product and manufactured in an FDA approved factory that complies with the GMP rules of ISO22716:2007 for Cosmetics. The mouthpiece kit contains the following items: 1) 2 x original Beconfident mouthpieces 2) 1 x whitening gel applicator 3) 1 x multilingual manual 4) 1 x link to video instructions Beconfident does not perform any animal testing