●Made of premium rubber, these mouthpiece patch pads are durable in use and not easy to deform ●Protects mouthpiece and teeth. It is a great helper for beginners ●Excellent adhesion makes it easy to match the musical instrument mouthpiece ●With dozens of options, you can choose the right size and color you like ●Quality Assurance: Our products have quality assurance, so if you have any problems, please feel free to contact us. We will respond as soon as possible