The Cotton/Lyocell Blend Gives You A Strong, Silky-Smooth Material. Both Fibres Are Soft, Breathable And Absorbent. Lyocell, Made From Wood Pulp, Is Especially Good At Absorbing Moisture From Your Skin. The Tight Percale Weave Makes The Fabric Very Durable And Resistant To Pilling. It Has A Matte Surface And Is Wonderfully Crisp, Soft And Cool To Sleep In. The Buttons Keep The Duvet In Place. Pillowcase With Envelope Closure.200 thread count. Thread count indicates the number of threads per square inch of fabric. The higher the thread count the more densely woven the fabric.