Designed to imitate the warmth and feel of natural down, VirtuDown offers you down-like warmth, loft, and softness. Plus, our Sierra comforter is finished with a beautifully soft 330 thread count cotton sateen cover. This combination gives you a wonderful easy-care product that closely mimics down, and is hypoallergenic, making it ideal even for sleepers that are allergy-prone and will provide years of superb slumber.