This speaker protection cover is made of materials, elastic and durable. Is a good helper for you to play the horn. Provide a healthy and environment for the audience and themselves. This is a for you. Features - Color: Black. - Material: . - Size S: 8.00X8.00X0.30cm/3.14X3.14X0.12inch. (Suitable for clarinet (2.95-3.3 inch.) - Size L: 9.50X6.50X0.30cm/3.73X2.55X0.12inch. (Suitable for Alto Sax/trumpet 4.8-5.3 inch.) - Size XL: 12.00X8.00X0.30cm/4.72X3.14X0.12inch. (Suitable for Tenor Sax 5.7-6.1 inch.) -Breathable design, almost no back pressure or acoustic loss during performance. -Made of , it is elastic and can be easily put on and off the instrument bell. -It is comfortable to the touch, breathable, easy to clean, reusable, and practical. -After each use, the protective cover can be easily cleaned and dried. -It is easy to put on and take off, will not harm your instrument, and is convenient to use. Package list: 1 x Horn Cover