100% Bamboo sheets are too soft and 100% cotton sheets are not soft enough and there was Bamboo cotton hybrid blend is in between. The softness of bamboo viscose blended with the durability of cotton to create this bamboo hybrid.The sheet set is made from 60% bamboo and 40% cotton woven at a 300 thread count. The fabric is cooling, soft, durable and breathable due to the bamboo-cotton blend. It also has natural thermal regulating properties, making this set ideal for keeping cool in the summer and warm in the winter. This sheet set includes a flat sheet, fitted sheet, and pillowcase(s). 60% Bamboo Viscose, 40% Cotton 300 Thread Count Sateen Weave 15 Inch deep pockets Machine Washable Available Sizes: Twin-XL (3-piece set) includes: one Twin-XL flat sheet 70 inches wide X 102 inches long, one Twin-XL fitted sheet 39 inches wide X 80 inches long, and one Standard pillowcase 20 inches wide X 30 inches long. Full (4-piece set) includes: one Full flat sheet 80 inches wide X 94 inches long, one Full fitted sheet 54 inches wide X 76 inches long, and two Standard pillowcases 20 inches wide X 30 inches long each. Queen (4-piece set) includes: one Queen flat sheet 92 inches wide X 102 inches long, one Queen fitted sheet 60 inches wide X 80 inches long, and two Standard pillowcases 20 inches wide X 30 inches long each. King (4-piece set) includes: one King flat sheet 110 inches wide X 102 inches long, one King fitted sheet 78 inches wide X 80 inches long, and two King pillowcases 20 inches wide X 40 inches long each. California King (4-piece set) includes: one Cal-King flat sheet 110 inches wide X 102 inches long, one Cal-King fitted sheet 72 inches wide X 84 inches long, and two King pillowcases 20 inches wide X 40 inches long each.