High-quality Materials: The jawsize exerciser is made of high-quality and food grade rubber, safe, non-toxic, sturdy and durable. Long-term use can improve your chin line and make you look younger and better. Exerciser: Jaw exerciser trains and stretches the muscles of the face and neck which can help reduce double chin, enhance jawline and help you achieve a perfect and natural smile. Portable & Easy To Carry: The jawline shaper is convenient, hands-free exercises, ultra-small size to carry, and can be used freely when going out, gym, work or anywhere.With plastic box and lanyard Easy to Use: Simply put the Fitness Ball & Facial Toner in your mouth, place it on your teeth and gently press down on the white bite strips to mold them for the most comfortable fit.