The Pyrenex Bayonne 360g/m² Greenfirst® anti-mite winter duvet is filled with warm feathers, ideal for sleepers who like to feel a certain weight on them during winter nights. Its natural filling is indeed composed of 70% duck feathers and 30% down; these proportions make it a heavier duvet than 90% down duvets, with a weight of 360g/m². Its beautiful finish and cotton percale cover make it a quality product, the fruit of Pyrenex's expertise in manufacturing in France. Enjoy wonderful nights in a cocoon of softness and warmth, for a restful sleep. Available in an anti-mite version, this duvet benefits from a Greenfirst® anti-mite treatment, whose active substance is geraniol and contains peppermint essential oil.  Filling in new French silver duck natural down 360g/m² 30% down, 70% feathers TOG (warmth rating): 11 Made in France Percale fabric 91 threads/cm² – 100% white combed cotton Square quilting with spacers Double-stitch and cotton piping finish Single-dose detergent bottle to reconstitute All our natural-fill duvets are guaranteed for 5 years.