The Lanadown Pillow features a unique blend of the fines Merino Wool and RDS certified White Down. This blend serves two important functions that set this pillow apart from anything you have used before. First, the wool helps to regulate temperature, keeping you nice and cool all year round as well as wicking away moisture for your most comfortable night's sleep. The White Down keeps the pillow light and helps maintain the volume. Together they create a perfect balance, helping you sleep soundly. This pillow is has double needle edges with german piping for durability, as well as an 230 TC Organic Cotton Shell that is GOTS Certified!