Reviv™ Mouth Guard – Boost Jawline & Facial Symmetry is a premium nighttime mouthpiece designed to enhance your facial aesthetics while you sleep. Made from 100% food-grade silicone, this comfortable and durable mouth guard promotes proper jaw alignment, supports mewing, and reduces teeth clenching. By encouraging correct tongue posture and alignment, Reviv™ helps define your jawline,... https://www.en-us-reviv.com