I make these myself and use vintage buttons as a purely decorative touch. Handknit of glittery blue yarn,this holds your clarinet mouthpiece inside helps prevent it from being knocked around in your instrument case. Over flap design adds security and keeps it in the bag! Mouthpiece is not included-you must supply your own! I take requests on colors-contact me let me check my yarn stash. These are also available for resale for music stores and individuals wanting to make a little extra $$ for mouthpieces,reeds,and other clarinet stuff. Contact me for pricing and minimum quantity orders.