Sleep cooler and softer on Cariloha's Resort Bamboo Sheet Set in Onyx, a deep black made from 100% viscose from bamboo with a premium sateen weave. Cariloha rates its bamboo viscose twice as soft as cotton and 3 degrees cooler, with natural thermal regulation that helps hot sleepers in summer and stays cozy in winter. The fabric also resists odors and allergens naturally, with no added chemicals. Each set includes one flat sheet, one fitted sheet, and two pillowcases. The fitted sheet uses Corner Active Bands on all four corners plus a 360-degree Perfect Bed Border elastic edge, with deep pockets that fit mattresses up to 18 inches thick, so it stays put on pillow top and hybrid beds. Orientation labels mark the short and long sides for faster bed making. Machine wash cold, tumble dry low. Choose Queen or King to match your mattress, and pair with a Cariloha mattress protector for a complete cooling bed.