PP Material: Face trainer is made of high quality PP material, safe and eco friendly, flexible and skin friendly, wear resistant and stable, durable for use. Facial Masseter Training: Upgraded 3 layer design, exercise and tighten the masseter muscles, improve double chin and help shape V face, simple and practical. Jaw Line Shaping: By having some repeated exercises, will make your muscles of jaw line look more beautiful. If you keep exercising your jaw, you will meet a significant effect. Easy To Use: Hold one end with your moutht, then inhale and exhale with your mouth, good training effect, after long term use, it helps to shape the chin contour and face shape. Multiple Applicable Scenarios: Light weight and in small size, easy to store and carry, can be easily put into your bag, suitable for home, office, travel, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store