Specifications:Made of high quality soft silicone, it is safe and healthy to use.It can be disassembled and cleaned, convenient and hygienic.Effectively exercise the strength and flexibility of the tongue muscles.Exercise the range and flexibility of jaw movement, and increase the strength of biting and chewing.Facial muscle trainer can improve your chin line and make your facial jaw look younger and better.Item Name: Facial Muscle TrainerMaterial: SiliconeFeatures: Unique Design, Facial Enhance, Chew MuscleSize: 3cm x 1cm/1.18" x 0.39" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x Facial Muscle Trainers