[Help Seat Aligners in Place] --- Comfortable to chew, helps your aligners are seated fully on your teeth, making your treatment progress faster. Aligner Chewies different colours represent different flavours, white is flavourless. [Prevent Facial Deformities] --- Wearing braces may have an insufficient bite force of the teeth, which will cause facial weight loss, and our aligner chewies help you exercise the masseter muscle and prevent the problem. Ergonomic Design --- Unique Y shaped design, which can help seat aligners more properly, avoid changing face shape during the process of wearing braces, speed up your orthodontic treatment, providing you a more comfortable and powerful experience. [Safe and Durable] --- Made of food-grade silicone material, mint flavor, flexible, soft, and durable. Have texture and not slippery; When you bite, it will not fly away from your teeth. Upgraded Y Shaped Aligner Chewies -- Designed with Y-handle for easy holding, avoid choking hazard espeically for children. With 3 different functional areas, perfect for molars area, incisor area, canines area, which help your trays fit correctly.