I have two of these for my Pottery Barn down alternative comforters. I love them! This fabric is the REAL DEAL! To save money, I have tried other brands of mattress covers, comforter covers, and shams which were supposed to help protect against dust mites. I bought them on Amazon and Target. But they didn't do anything. I was itching and my skin developed a rash. Mission Allergy has the only product that delivers on its promise to provide a protective barrier against dust mites.