Organic Sheet Set Organic and incredibly soft, our cotton sheets are made with Long staple cotton woven in a distinct 4-over-1-under weaving technique, specially formulated to enhance the softness of this sheet set with every wash. Details * 400 thread count sateen weave * 100% long-staple organic cotton * GOTS certified to have been tested for harmful substances, made in environmentally friendly facilities, and produced in safe and socially responsible workplaces * Fitted sheet features 360-degree elastic for a tailored fit and fits mattresses up to 17" deep. * In our efforts to reduce plastic, this product comes in a reusable, organic cotton bag What's Included 1 Fitted Sheet, 1 Flat Sheet & 2 Pillowcase (Twin include 1 Pillowcase) Dimension Care * Machine washes warm, normal cycles with like colors.