Regular use of the jaw muscle fitness ball can strengthen the muscles around the face, jaw and neck, and make the jaw muscles firmer. The result is a significant reduction in excess fat around the chin and a more pleg facial contour.SUITABLE FOR BEGINNERS: Our jaw muscle exerciser is between 1-40 pounds and the size is 3.5 3 3cm. The size and hardness are very suitable for beginners. CONVENIENT TO CARRY: Our mandibular muscle exerciser is equipped with a lanyard, which is convenient for you to avoid touching the exerciser with your hands during the application process, which is clean and hygienic. At the same time, we are also equipped with a transparent storage box, which can be easily put into pockets, handbags, etc., which is very suitable for fitness and work. HELP STRENGTHEN THE JAW AND FACIAL MUSCLES:If you unknowingly keep your jaw tight, it may cause headaches, fatigue, toothache, earache, and may even cause sleep disorders. Daily use of our chin exerciser can strengthen the muscles around the jaw and face, thereby reducing pain and promoting a healthy sleep cycle. UNIQUE DESIGN: The silica gel of our jaw exerciser is detachable and replaceable for easy cleaning. The front part of the exerciser is thick, the rear part is thin, and the middle part is hollow, with a 1.3cm hole, enough space for you to bite. MATERIAL SAFETY: Our facial exerciser is made of food-grade organic silicon to ensure safety. By targeting 57 facial muscles, it can help revitalize your overall facial structure, promote blood circulation, reduce sagging, wrinkles and smile lines, and make you look younger and radiant.