Details Material: Made of 100% cotton slub. Reversible Design: Reverses to the same as front. Secure Design: Duvet features a button closure with inner ties to keep insert in place; sham features an overlap closure. Components: Duvet cover, shams, and inserts are sold separately. Certification and Standards: OEKO-TEX(R) STANDARD 100 certified, tested for 1000+ harmful substances (14.HUS.42449 HOHENSTEIN HTTI). By choosing our cotton products, you're supporting our investment in Better Cotton's m