Hi Copperfrog,
As I was doing some research in the areas that I am focusing on, I took a quick detour to see if I could find anything regarding what you were asking about. I found these 2 links:
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(the "cozy' section looks like it might contain bathrobes)
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I don't know if these companies are already in the Salehoo directory -I did not check. Also, from the look of the sites, you will have to actually call them to get details on wholesale prices or asking about what companies they distribute through.
I'm sure the Salehoo staff will be with you shortly with more comprehensive info.
best of wishes!
Roni3d1