Rayon from BAMBOO Sheet Set -California King Gold 100% silky bamboo Sheet Set Extremely comfortable in all temperatures. Perfect for people with allergies & chemical sensitivity Bamboo is one of the softest fabric in the world, Noticeably softer than cotton. Bamboo is highly resistant to dust mites. Amazingly soft similar to cashmere or silk. GOLD Cal King Sheet Set Includes: 1- cal king Flat sheet 110" x 102" 1-Cal King Fitted 72" x 84" and fits up to 18" mattress, 2- king Pillow cases 20" x 40" ea