Woven from 50% linen, 50% organic cotton. Pre-washed for a light, airy, luxuriously soft feel. Shams sold as a set of 2. Woven from 50% organically grown cotton certified to the Organic Content Standard (OCS). The OCS verifies organically grown content and tracks it from the source to the final product. WSI certified by Bureau Veritas: TE-BVUS0027 Duvet features natural coconut-shell button closure with inner ties to keep insert (sold separately) in place. Shams feature envelope closure. Made in Turkey.