Yt 235 coffee cup holder

[Mauser12]

Has anyone found an insulated coffee cup/ mug that actually fits the Yt235 holder? Everything I have tried is too large for the small part and too small for the larger diameter. As a result they eventually rattle around, tip over or fall all the way out.

 

[mddorange]

You could try what I have done, wedge a piece of foam rubber in to hold water bottles and the normal size tumblers in place. No rattle, spill or loss.