The wool is raw and naturally pigmented. It is held in place with hemp or cotton (not the usual polyproylene). No chemical bonds, dyes and other agents are used.
The backings of carpets are usually the worst kind of air quality offenders. Earthweave backing is made from jute, and is held in place using a natural rubber-based adhesive.
Prices range around $36-41 per square yard.
Home Page: Earthweave