This cozy topper is filled with premium natural wool sourced in the United States and covered with certified organic cotton sateen fabric. The natural Savvy Woolsy™ topper is a perfect option for those looking for domestic, quality materials. The layered wool creates a soft, plush feel without sacrificing support. Wool also promotes air circulation, leading to a comfortable sleep experience. You’ll feel warm and cozy in the winter but cool and refreshed in the summer.