100% Polyester Microfiber Down Alternative Comforter. Add a luxurious comforter that ecompasses all the key factors that one looks for in a comforter: comfortable, breathable, and smooth.. While also being hypoallergenic, this down alternative comforter provide the warmth and softness of down but minimizes the development of allergic reactions. It can make a big difference in sleep comfort and overall allergy levels. 100% Polyester Microfiber Down Alternative Comforter. Add a luxurious comforter that ecompasses all the key factors that one looks for in a comforter: comfortable, breathable, and smooth. Hypoallergenic down comforters provide the warmth and softness of down that minimize the development of allergic reactions. It can make a big difference in sleep comfort and overall allergy levels. Comforter only - Shams not included!