Features: High Quality Material: The underjaw exerciser is made of high quality material, durable and wear-resistant, not easy to break, can use for a long time. Anti-slip design: The material is soft and durable, and will not damage the underjaw of the tooth box. The white buckle rubber strip can be disassembled freely, which is clear, convenient and hygienic. Underjaw Exerciser: Strengthen and shape your chin line and reduce double chin. Through chewing exercise, make your facial muscles more compact, not loose, and look younger. Portable: The underjaw exerciser is small size, light weight, easy to carry, and does not take up much space in your bag. Applicable to multiple scenarios: It can be used by both men and women. Use it anytime, anywhere, gym, workplace, home, etc. Notice: *Actual color may be slightly different from the image due to different light effect *Please allow 1-3cm deviation due to manual measurement Description: Material: silicone Size: 1.8*2.7*1.7CM/piece Package List: 6 x Underjaw Exerciser