Piatra Wool Duvet 100% Pure Merino Wool , by St GenèveSleep naturally. Sleep better. The Piatra Wool Duvet by St Genve is filled with the finest 100% pure Merino wool from Europe, encased in a 238 thread count 100% German cotton ticking. Incredibly soft, lightweight, and perfectly draping it's the duvet that works with your body, not against it. Wool naturally regulates your body temperature, wicks away moisture, and resists common allergens like dust mites. With less than 1% lanolin, Piatra's Merino