may I ask for some help?

This is another new product line we want to develop but my DH does not use shaving mugs/soap.

So, if yours does, what is the diameter of the mug?(Inside) And, if he has an extra bar, what is the size of it?

Also, what fragrance does he like?

We have the brushes ready, and I'm having a local potter develop/design a unique mug, but I just need a tad bit more info.

Thanks ladies!!