Organic Percale Simple Stripe Pillowcase Set. King. Dune. Our ultra-refined fabric-smooth, structured, 100% organic Smooth and structured like a crisp button down shirt, this pillowcase set is luxuriously made with our special cooling weave and updated with a fine double stripe motif. This pillowcase set is woven with the finest long-staple 100% organic cotton on earth, each thread spun with meticulous precision to ensure these sheets feel incredible for years to come. MADE DIFFERENT. SLEEP BETTER AT NIGHT.