Set de 6 piezas para ejercitar la mandíbula - Entrenador facial para la mandíbula - Fortalecedor muscular de silicona para la mandíbula - Dispositivo de fitness facial para la mandíbula y la papada

Package Contents: 8 jaw muscle trainers (2 black, 2 white, and 2 gray). Medical-grade silicone material: soft, BPA-free, and hypoallergenic. Safe for daily use and non-irritating to the skin. Adjustable resistance: convenient for gradual training. Suitable for beginners and advanced users. Dual-function design: trains both jaw and facial muscles simultaneously. Improves jawline and reduces double chin. Ergonomic design: comfortably fits the mouth. Suitable for jaw muscle training. Lightweight and portable. Scientific principle: helps relieve temporomandibular joint disorder and jaw pain.