The lasting comfort and classic style of cotton is brilliantly blended in the Woven 600 Thread Count Cotton Blend Sheet Set by Malouf. For a luxurious feel at a modest price, the cotton rich fabric in these sheets have a unique, dual-sided design that preserves the supple feel and vibrant color of cotton. Blended fabric content is 55 percent cotton, 45 percent polyester, that make these sheets smooth and soft. Poly fibers are woven across cotton threads to create a soft cotton surface on one side and a wrinkle-resistant poly surface on the opposite side. The sheets are designed to fit any mattress, with a UNIVERSAL FIT design, the deep pocket fitted sheet fits on mattresses from 6 to 18 inches thick. An extra-thick elastic ensures the sheet stays flat, smooth and in place. For the most comfort while you sleep, you will want to make the bed with the cotton side facing your skin, the cotton side feels softer and looks a bit darker. While these sheets dress up your bed and enhance your sleep, they are made of easy-care fabric that is washable. To keep your sheets looking and feeling great, machine wash in cold water, tumble dry low and do not iron.