[Chime Bells]

A simple answer to your question would be: China.

 

[50an6xy06r6n]

http://ultimateears.com/en-us/products/universal-accessories?
This is for the U.S. though...

 

[Sternklang]

I know a couple of years back people were having trouble ordering these even though they were listed on the UE website. Just to let people know, I ordered a set last week and it shipped a couple of days later. So whatever problems UE had keeping these in stock back then seem to have been resolved.
 
I should mention, this is shipment within the US. I don't know if there are issues shipping outside the country.