Travel tea mug for rooibos tea?

Hi everyone,

I was wondering if anyone here could recommend a good travel mug (with a built in steeper) and/or a separate tea filter/steeper that works well with rooibos and other fine teas. I apologize if this as already been posted elsewhere – I looked, but didn’t see anything specifically about what works best with these types of teas. My current tea steeper isn’t the greatest for finer teas.

So far I’ve been looking at the libre tea glass or the eight cranes perfect steeper on amazon. Does anyone know if these work well with these teas? Other recommendations also welcome!