Material: 100% viscose (rayon) derived from bamboo, not blended with any cheaper fabrics Thread Count & Weave: 400 thread count with a luxe sateen weave—silky, smooth, and often compared favorably to Egyptian cotton Certifications: OEKO‑TEX Standard 100 certified, ensuring no harmful chemicals or heavy metals are used Thermal Properties: Naturally moisture-wicking and thermal-regulating—ideal for hot sleepers, breathable and comfortable year-round