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. Key Features: >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) Care: >Machine washes warm, normal cycles with like colors. Do not bleach. Tumble dry low. Warm iron when needed. Do not dry clean. >Organic cotton blooms after every wash; your products will continue to soften as you use and clean them.