Size 2.5*2.5 * 2.3in The Weight Of 96 Material Silicone Cleaning Rinse The Product Using Soap And Hot Water Specifications: Our Jaw Exerciser Will Put Pressure On Your Back Teeth, Increase Blood Flow To The Masseter (jaw Muscle) Area And Burn Fat. Therefore, The Jaw Line Shaper Will Help You Strengthen The Chin And Adjust The Contour Of The Face. Chin Trainer Is More Than Just Cutting The Chin, Continuous Training With Chin Trainer Can Strengthen And Adjust Your Chin, Define Your Cheekbones, Or Increase The Fullness Of Your Lips, Tighten And Adjust Facial Muscles, Reduce Double Chin, And Make Your Face Young And Energetic. Pocket Size, You Can Also Hide In Your Mouth, So That You Can Use Our Chin Muscle Exerciser To Exercise In Any Public Place, Such As Walking, Gym, Work, Watching TV, On The Road, Etc. You Can Enjoy A Slimmer Neckline And A Clearer Chin Contour At Any Time Through Fast And Comfortable Exercises. Package Included: 1* Fitness Ball Jaw