Jaw and neck tightening devices made of food-safe silicone to ensure safety. The polyurethane bite strip enables your mouth to be individually shaped, with which you can easily adjust the shape and the oral cavity. Chewing the jaw exercise has been shown to reduce cravings and result in more weight loss. Convenient, easy-to-carry hands-free practice exercises can be used when going out, at the gym, at work, and anywhere.Use it at the gym, office, or on the go. We know we need to train our bodies to stay toned, so it only makes sense to train the muscles in your face and neck as well. If you want to get your face leaner and firmer, try a couple of burnout sessions where you stand, hold, and slowly let go of your bite.The exercise set can start with at least 30 to 40 repetitions and then four sets of 150 repetitions per day. You have to persevere, but it can produce results. Do chin exercises every day to tone the muscles around your chin and muscles, relieve pain and promote healthy sleep cycles.% If you are not satisfied with our products or have any problems with the products you received, please feel free to contact us. We will help you replace new products or refund your order in full according to your requirements.