1. Three-level Resistance Chin Exerciser Set The food-grade silicone sheet has three resistance levels (40 lbs, 50 lbs, and 60 lbs resistance), suitable for a wide range of users. This is a product suitable for both men and women to exercise their chins. When exercising, it can activate the facial muscles, increase blood circulation and oxygen content in the face. Performing 5 - 10 minutes of chewing exercises every day may help achieve a well-defined jawline. 2. Proper Exercise of Chin Muscles Our jawline exerciser is designed to exercise the masseter muscles and reduce the fat accumulation in this area, which may contribute to slimming the face. Different from some other chin training products, our product is safe for your teeth, gums, and joints. 3. Jawline Exerciser for a Toned and Slim Face Using our chin trainer can activate your facial muscles and make your face more toned and slender. The deepened texture and curved edge design make it more suitable for chewing, providing a better experience. This is a suitable chin exerciser for both men and women. 4. Exercise Your Chin Anytime, Anywhere Our lightweight, compact, and easily concealable chin shaper allows you to exercise at various times and places. It is small enough (with dimensions of 1.18×0.79×0.65 inches) to fit in your pocket and comes with a plastic storage box. You can use it in public places and keep your face-shaping tool with you.