Inetersting - I've never used bamboo batting or fabric although I do have some bamboo socks! :mrgreen:
I googled around and found this
http://organicclothing.blogs.com/my_...-facts-be.html
It claims that there are two ways of transforming bamboo into fabric - mechanical and chemical. The mechanical way is hardly used as it is so labour intensive, therefore expensive. The chemical way is toxic, especially to those involved in the process but also, potentially to the consumer. New chemical means that are less toxic are being developed. The marketing people concentrate on the eco-friendly way that bamboo can be cultivated and gloss over the manufacturing processes. There are accreditations you can look for when purchasing from organisations like the Soil Association and Oeko-Tex.