Our Standard Comforter is filled with our wool which is  from sheep that are raised organically, without antibiotics, hormones, or other chemical treatments and certified organically processed by Oregon Tilth. No purer wool exists. We follow all this purity by doing our own testing in a third party lab. Outer fabric is organic cotton damask. These wool comforters are hand tufted for a soft, fluffy feel. Made right here in California and packaged in our pure food grade polyethylene for total purity.