Silky Smooth, All-Season Comfort:Crafted from bamboo-derived fabric with a cloud-like weave-softer than cotton, breathable for summer coolness and cozy winter warmth.Zero-Slip Grip & Gentle on Hair:Deep 16-inch pockets grip thick mattresses securely, even during restless nights. Silky envelope pillowcases minimize friction to keep hair smooth.Effortless Care, Enduring Softness:certified and machine-washable. No fabric softeners are needed, and it stays luxuriously smooth and color-rich for years Certifications:OEKO-TEX Standard 100 Certification (24.HCN.19195)Material:Rayon Derived from BambooWhat's Included:1 Flat Sheet, 1 Fitted Sheet, and 2 PillowcasesTwin and Twin XL sets include 1 Flat Sheet, 1 Fitted Sheet, and 1 pillowcas