The Theo Wanne Reed Replacer Cap is held to the mouthpiece by the ligature itself. A portion of the cap extends under the ligature just like a reed would.
Designed by Theo after hundreds of musicians asked him to fix their mouthpieces after they were damaged by dropping them…with the cap still on.
Your mouthpiece is worth the protection afforded by the Reed Replacer Cap. The cap will not fall off, and it will protect the most delicate part of the mouthpiece (the tip) even if you drop the mouthpiece right on the tip itself. There is no better way to protect your mouthpiece!