What materials are used in the Birch Organic Pillow? August 12, 2020 18:29 The Organic Pillow is made with an organic cotton shell. It contains 70% natural latex and 30% organic wool clusters. Related articles How do I wash my Organic Pillow? Can I return my Organic Pillow? What Are The Dimensions Of Standard And King Organic Pillows? What materials are in the Birch Plush Organic Mattress Topper? How will the Birch Mattress feel? Soft or firm?