Two-sided weave design creates a soft cotton side and a wrinkle-resistant poly side,Deep pockets and oversized dimensions for mattress depths up to 18",Universal Fit design with thick elastic for a smooth, secure fit,Sheet sets or pillowcase sets available in four colors,The classic look and incredible comfort of cotton is available at the price of a blend. Instead of blending yarns before the weaving process, all cotton strands are lined up in one direction and poly strands woven across them for a two-sided design with the feel of pure cotton on one side and the wrinkle-resistant convenience of polyester on the other. Make the bed with the cotton sides facing each other for the soft, cozy feel of cotton against the skin. The Universal Fit design ensures sheets have a smooth, secure fit on any mattress.