Protec's Woodwind Mouthpiece Cushions offer a universal fit and provide mouthpiece protection and comfort from annoying vibrations, while also improving ligature grip. Includes package of 6 mouthpiece cushions.
 
Comfort from annoying vibrations
Improves ligature grip
Protects mouthpieces

Instructions:
Easy to use: simply peel and stick onto mouthpiece baffle
Large 0.8mm cushions accommodate most Bb clarinets and large