Luxurious Bamboo Viscose Sheet Set - Blue - California Blue - Queen Bamboo Viscose Fabric-Twill Weave. Naturally anti-bacterial; Anti-dustmite; Great for people with allergies. Very Soft; Silky but not slippery or cold like Silk. Comfortable in all temperatures. A set includes a flat, a fitted, and 2 pillowcases. Fits mattresses up to 18".