Perfect Jaw MuscleJaw Muscle Exerciser say goodbye to Double Chins and loose facial muscles, jaw trainer promotes skin tightening and chin lift, jaw exerciser promotes facial firmness and double lifting chin and creates a perfect chin contour jaw design. MaterialJaw muscler The jaw exerciser uses food grade silicone to ensure safety. Jaw Eraser After washing it, you can put it in this mouth and use it. Can be reused after cleaning.Double Chin Reducer) InstructionsJaw Exerciser like other fitness equipment, do not rush to success and overexercise, otherwise it will damage the muscles of the jaw. jaw and teeth. Exercise 2-3 times a day for 10-15 minutes, and after 1-3 months the effect will be more obvious, continue to exercise, make you more attractive. Lightweight and Portable Neck Face Chew ToolSmall size, easy to carry, feels like you're eating, you can do a workout anytime without drawing unwanted attention to your mouth. Can be used on the go, at the gym, at work and anywhere, it's the perfect workout tool for men, women and everyone Package Included You will receive 6 jaw exerciser (2 black + 2 white + 2 gray). TIPS: Everyone's bone structure is different and results may vary from person to person, no need to force, you always have your charms. Do not underestimate the bite force of the teeth, the products are consumables. If used for a long time, even the stone will be rotten by the bite. If there is an effect, it is recommended to buy regularly.