Grove Hill Kyoto 3-Piece Cotton Duvet Cover Set, Full/Queen Size for $28.79 after promo code COLUMBUS20. Shipping is $8.95 for a total of $37.74 shipped, or free on orders over $75. Here is a screenshot for reference. The duvet cover set is made of cotton, and includes a duvet cover with button closure and 2 shams. Most places have it for about $39 or more.