Description de chez Amazon USA : - IMPROVE FORM: The balanced response, focused tone, and accurate pitch helps young musicians learn the proper approach to embouchure formation and air support<br /> - DURABLE: Made of durable plastic and featuring a medium facing design, Goldentone Clarinet Mouthpieces are perfect for any musician looking to improve their playing ability<br /> - EASY-TO-PLAY: The medium facing mouthpiece offers quick response in the upper and lower registers and is easy to play<br />