This incredible pillow is filled with the 800+ loft remarkable down from the Siberian Muscovy duck, sourced from a free range open farm in Siberia. This down is renowned all over Russia for being one of the best down available, having properties almost identical to Eider down. Muscovy down consists of exceptionally large grey plumules that have amazing cling and insulation properties, while being incredibly weightless. The extremely breathable and specialty woven 400 thread count down proof 100% cotton shell allows air to effortlessly circulate, wicking away moisture while temperature regulating as you sleep. Beautifully finished with reinforced double stitching and piped edging.