We use traceable, sustainable, natural fibers such as organic cotton, Tencel™, modal, organic linen, and hemp. We rely on certifications such as Global Organic Textile Standard (GOTS), Organic Content Standard (OCS), to assure our fibers meet our sustainability standards. At this point, to cut out all ambiguity behind our fibers, we only buy organic fibers that have obtained GOTS/OCS certification.