展开- Jawline exerciser directly targets jaw muscles.It promotes face tone firming & chin lift, chisel jawline shaping and v line slimming. - 100% BPA free food grade silicone, healthy, safe and non-toxic. Unlike other jaw workout products, this tablet’s design will prevent any harm to your teeth, gum and joints while using. - A gradual and guided progression toward your goal, 6 pieces, 3 resistance levels for a safe jaw exercise (white 40- grey 50- black 60 Lbs). - Use this jaw trainer for 10-15 min/day. 30 days, you will build a strong well defined jawline. Look younger and better with a chiseled jawline - With a small carrying case, you can easily exercise while the tablets are hidden in your mouth.