Organic Percale Simple Stripe Sheet Set. King w/ Std. Cases. Dune. Our ultra-refined fabric-smooth, structured, 100% organic Smooth and structured like a crisp button down shirt, these sheets are luxuriously made with our special cooling weave. We source the finest long-staple 100% organic cotton on earth and meticulously spin each thread with precision to ensure these sheets feel incredible for years to come. MADE DIFFERENT. SLEEP BETTER AT NIGHT.