Hugger Mugger Bamboo Yoga Towel, Charcoal

It's not perfect, but out of the 3 brands I've used it's the best. It doesn't hold any terrible smell. It's pretty thick and stays relatively where it's supposed to with good grip.

The description says it's bamboo but the actual product says "80% Polyester (made from bamboo charcoal), 20% Nylon". To me, polyester is polyester and calling this bamboo implies it would be a bamboo fibre and not a bamboo plastic. So if you're looking for something without polyester, look somewhere else.