This item adopt food grade silicone material, healthy, and comfortable, which help to slim and firm your facial muscles and thus you will get yourself a great smile in the future. It's elastic and flexible, practical smile training, muscle exercising tool. Correcting smile, practice with a smile every day, make it easier to laugh, and more natural after the lips. Features - Color: green. - Material: silicone. - Size: About 7.8x4.4x2cm. - Portable and compact: Easy to carry and use. whether in front of the mirror, in the bath or at any other convenient time every day. - Facial skin lift: Promotes the muscles of the mouth to stretch, raise the corners of the mouth, and firm the face. - Smile Maker stretches the muscles on the lips end and this could help you to have a brighter smile and a good impression. - Facial muscle exerciser makes for a more natural smile. Good smile training is for stewardess, service jobs, people with an expressionless face.