BAZHOU You need just 10 min of daily chewing jaw trainer in order to achieve a defined jaw line.Our jaw exerciser directly target the jaw muscles and burns fat deposits in that area working as a face slimmer. Unlike other jaw training models, ours will prevent your teeth, gum and joints from any harm. Activate your facial muscles (masseter muscles) while using our jaw trainer and increase facial blood flow and oxygenation. The exercises will tone your face define your jawline. This is a perfect jaw exerciser for men and women for jaw workout. Our jaw shaper enable you to workout in any public setting. You can easily exercise while the tablets are hidden in your mouth. Colour: grey Size: 3*1.5*1.5cm Quantity: 20pcs 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that cm it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products