Features: High-quality materials: The exerciser is made of food-grade silicone. Safe silica gel does not contain any chemical-fillers or by-products, so you chewing with confidences. It is made of the same material as the baby pacifier. Humanized design: The product uses molars for training, which is safer and more effective. Unlike other types of exercisers, using front teeth (incisions) for training, this exerciser may damage the front teeth and gums. Multiple advantages: It has been found that chewing can reduce cravings, leading to more weight loss, get rid of double chin and loose facial muscles. The Masseter Muscle trainers can strengthen your Masseter Muscle and face, help tighten, jagged and slender face, and make you look younger. Convenience: Whether you are working, exercising, at home or on the road, you can use the double chin reducer anywhere. As a gift: You can send this product to your friends on Christmas or other days. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material:Silicone Size:6.5x6.5x2cm Package List: 1 Pcs*Masseter Muscle Training Tools