100% Viscose from Bamboo "Super Soft" King Sheet Sets 100% Rayon from Bamboo(Viscose), 300 Thread count, Extremely comfortable in all temperatures. Perfect for people with allergies & chemical sensitivity. Grown without pesticides. Resistant to dust mites One of the softest fabrics in the world, Noticeably softer than cotton. King Size Sheet Set Includes: 1- King Flat sheet 110" x 102" 1- King Fitted 78" x 80" and fits up to 18" mattress, 2- King Size Pillow cases 20" x 40" ea.