Flat Sheet Viscose From Bamboo (Cal King) viscose from Bamboo Imported Silky Softness Great Breathability Highly Absorbant Luxurious Enjoy the ultimate in luxury with Catalina Comfort bedding collections 100% viscose made from bamboo. Our products are smooth as silk, lightweight, highly absorbant and have great breathability. In addition, they are easy to clean and dry fast. Enhance your sleep with the silky softness of bamboo and stay cool and comfortable.