Function: Our jaw trainers are designed to stimulate the facial muscles while exercising, so that these muscles are tight, so that your face becomes slim and toned, so that you have a clear and attractive jaw line. Material: Our food-grade silicone jaw trainers have 3 different resistance levels to gradually train your muscles and are suitable for both men and women. Portable: This chin exerciser for men is pocket sized and allows you to exercise in any public place such as walking, gym, work, watching TV, on the road, etc. The perfect gift: This is the perfect gift to give to your family, friends or people who are getting plastic during the holidays. Date First Available January 6, 2024