Organic Signature Hemmed Pillowcase Set. Standard. Dune. You’ll feel the difference immediately: this pillowcase set is buttery, breathable and gets softer with every wash. It starts with the highest quality threads sourced from the finest long-staple 100% organic cotton on earth. Each thread is then luxuriously woven to ensure these pillowcases feel incredible for years to come. MADE DIFFERENT. SLEEP BETTER AT NIGHT.