Create perfect facial lines: chewing reduces cravings and leads to more weight loss. Convenient and easy to carry, hands-free exercise can be used on the go, at the gym, at work and anywhere. Safe Quality: The fitness balls are made from high quality food grade silicone , so it is very safe to chew. It is elastic and not easily deformed. You can practice with confidence. A professional leg surgeon: Say goodbye to double chin and slack facial muscles. By removing the chin and fat deposits around the neck, you can promote facial firmness, stimulate the chin and create a perfect Chin contour. Easy to carry: Due to its small size and its light weight makes it easy to take it with you when working out anywhere and anytime. Take it with you, to the gym, to work, everywhere. How to use it: Place exercise equipment between upper and lower teeth, bite down hard for 10 seconds, then relax. Repeat this movement every day for 5 to 10 minutes. Please don't chew quickly, but bite your teeth and feel the strength of your muscles. Before it gives results, you have to stick to it. Dimensions: 3 x 1.7 x 2 cm Package contains: muscle training ball * 2