GOTS Certified Organic Cotton Pillow Cases. These Organic Cotton Pillowcases Are Certified Organic, Sustainably Sourced and Soft to the Touch. Optimal 300-TC Thread Count Weave Keeps Dust Mites, Bed Bugs Other Allergens Out. Organic Cotton Pillow Cases Have the Natural Advantage of being temperature regulating, they Keep the Skin Cool When It's Warm and Warm When It's Cool. 60's Compact Yarn is the finest thread which results in smoother and lighter fabrics spun by them. We use only high quality compact yarns which are smoother and finer than the normal ones. The 60s organic compact yarns that we use are the best available ones for cotton pillowcases and shams, making them ultra-lavish, smooth and fine. 300-Thread Count Thread count refers to the number of horizontal and vertical threads per square inch. Generally, the higher the thread count, the softer the cover and the more likely it will wear well-or even soften-over time. Our Pillow Cases are made of a 300-thread count with single ply yarn for utmost softness and added strength. Extra Long Staple Fibers are only used. Extra-long staple fibers yield finer, longer and smoother yarns. As with cotton, longer staple fibers are the best because fabrics made out of such fibers fray less, pill less, wrinkle less and even fade less than fabrics made with their short-staple counterparts. Long-staple cotton cases will feel luxurious longer, leading to a more comfortable night's sleep for years to come. Color: White.