This is a set of aligner tray seaters, which are made of high-quality materials, durable and can be used for a long time.Use of aligner tray seat chewies can better adjust and wear aligner tray, avoid changing the face shape in the process of wearing braces, and also make the teeth fit well. Features -Color: Random color. Size: About3.50X1.00X1.00cm/1.38X0.39X0.39in. Orthodontic Chewies is made of high-quality silicone material, provide you with safe and chewing experience.- Use of aligner tray seat chewies can better adjust and wear aligner tray, avoid changing the face shape in the process of wearing braces, and also make the teeth fit well. The aligner chompers not only hold the braces, but also exercises the bite muscles without sacrificing them wear time to ensure sufficient bite movement.- Meet all your needs and share them with friends or family.- There are 6 different colors and flavors, which will convenient and practical to use. Packing list: 1 x Set 12Pcs