WHAT ARE THE CASPER DUVETS MADE OF?

Our Humidity-Fighting Duvet has a 100% cotton shell filled with IDFL Certified Duck Down and a layer of merino wool. Our Down Duvet has a 100% cotton shell filled with 100% white duck down. Our Down-Alt Duvet has a 100% Tencel™ shell filled with 100% Recycled Polyester and a 100% Olefin liner.