Front: 52% organic cotton, 48% TENCEL™ Lyocell. Back: 100% organic cotton. Duvet Cover: Button closure; four interior corner ties keep it in place. Shams: Envelope closure. Front: 280-thread-count; back: 200-thread-count. TENCEL™ is a Lyocell fiber sourced from responsibly managed forests. Its sustainable, closed-loop process has a recovery rate of more than 99%. Made in a Fair Trade Certified™ facility, benefiting the workers who make it. Made in China.