For use with the reed attached. This is great for doublers or those needing a cap while playing on the bandstand.
 
All Theo Wanne™ mouthpieces come with our Reed Replacer Cap which protects the mouthpiece in storage and when traveling better than any other cap in the world.   However, it cannot be used when the reed is still on the mouthpiece.   Use this cap when you wish to leave the reed on the mouthpiece.   We have a size that fits every Theo Wanne™ mouthpiece!