Calling all hot sleepers: Our Cooling Down Alternative Duvet is made with HydroCool® moisture-wicking fill to keep things crisp and cool when you sleep (while still giving you that cozied-up feeling). Choose the density that's best for you: All Season, for year-round comfort, or Extra Warm, for those who need it cool and toasty. Each is hypoallergenic with a Eurobox style construction to keep the fill even. Your choice of warmth: All Season (lighter weight for sleeping cool, year round) or Extra Warm (higher density to sleep warm in colder climates). Cover: 100% brushed organic cotton (230 thread count). Fill: 100% HydroCool® polyester. STANDARD 100 by OEKO-TEX® Certified : tested for 400+ harmful substances. 14.HUS.42449 HOHENSTEIN HTTI Hypoallergenic. Eurobox construction; corner loops tie to the duvet cover to keep duvet in place. Assembled in the USA with imported raw materials from China.