Theo Wanne Mouthpiece Cap

US Taxes included
  • Fast Worldwide Delivery
  • Award Winning After Sales Service

Finally a proprietary cap for new Theo Wanne mouthpieces, designed and manufactured by Theo, to protect the mouthpiece with reed on.   

“We know this has been a long time coming…but we wanted to do it right. A lot of love went into its design, so that even if you drop the mouthpiece, it won’t damage the mouthpiece tip!” – Theo Wanne

Theo Wanne™ mouthpieces come standard 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 the Reed Keeper™ cap when you wish to leave the reed on the mouthpiece, such as when you are on stage, or during practice sessions.  The Reed Keeper™ Cap will STILL protect the mouthpiece tip, even when dropped!”

If you look closely, you will see this is not an ordinary cap, a lot of thought went into it!

  • Small Size:  Fits Alto and Soprano current version metal and hard-rubber Theo Wanne™  mouthpieces. Will also fit many, but not all, older model Theo Wanne™ metal alto, and hard-rubber or metal soprano mouthpieces. It will not fit NYBROS or other Large Body alto mouthpieces.  
  • Large Size:  Fits Tenor and Baritone current-version metal and hard-rubber Theo Wanne™ mouthpieces. Will also fit many, but not all, older model metal Theo Wanne™ tenor mouthpieces.  Will not fit SLANT SIG or other Large Body Tenor mouthpieces. 

Please Note: This mouthpiece cap is not compatible with the Theo Wanne EARTH, FIRE or WATER mouthpieces, as well as the Theo Wanne NY Bros alto or Slant Sig tenor mouthpieces. 

Delivery & Returns


If you're based overseas and would like more information, please read our overseas guide located here


Orders in stock and received before 2pm are normally shipped the same day. International orders are generally received in under 7 days.


Goods purchased online from can be returned within 14 days of receipt. This does not apply to custom ordered goods, products where hygiene is concerned and product seals have been broken (reeds, mouthpieces etc), digital download codes or software licences. Goods purchased through our website cannot be returned to our retail stores.