Features:1. Facial exercises. This jaw and neckline exerciser puts resistance on the muscle groups that support the face, chin and neck, allowing you to tighten your skin.2. It helps to strengthen the facial contour, tighten the skin, lift the jaw line and prevent double chin. Designed to activate muscles to improve the vitality of the face and neck.3. It can be used as a mandibular line exerciser, as well as a breathing apparatus for inhalation and exhalation for respiratory care. 4. Convenient to carry and light in weight, allowing you to exercise easily anytime and anywhere, and it is also easy to clean and maintain.5. Made of silicone materials, safe and durable, suitable for your training. Can be reused and cleaned. You can even put it in the dishwasher for simple but efficient cleaning. Notice:Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Description:Material: siliconeSize: 1.9*1.8*2.8cmBattery: NoColor/Style: As the picture shown