High Quality MaterialThe jaw trainer is made of food-grade silicone. The jaw trainer contains no chemical fillers or by-products, so you can chew safely. The facial fitness ball is made from the same material as the baby's pacifier. This means our jaw exerciser lasts four times longer than any other trainer on the market. 4 Styles Of Jaw Training8 jaw trainers, 4 colors correspond to 4 resistance levels: 35 kg, 45 kg, 55 kg, 65 kg. Give your jaw a new challenge. Unisex, if you chew for a long time, there will be some wear and tear. We recommend replacing it regularly depending on use. The Complete Workout With 4 Different LevelsContrary to others, our jaw exerciser has 4 different strength levels, so you can perform a complete workout alone with this kit. We've rigorously tested our system to make sure you can get the best chin area in just 10 minutes a day. Jaw Line TrainingWith our jaw trainer, you can firm up your jaw muscle, reduce the appearance of a double chin and boost your self-confidence. The trainer has an anti-stress effect and can relieve tension on the face. Gives you a younger, more attractive look. Easy To Use And CleanPlace the double chin trainer in boiling water for 15-20 seconds before first use. Rinse and place in mouth. Gently bite the white bars to get a comfortable grip. The jawline exercise can be washed by hand or put in the dishwasher for quick and easy cleaning. Rinse the jaw exercise ball after use with lukewarm water and keep dry for next use.