This feather bed has 2 layers. The bottom layer is filled with goose feather, which provides great, resilient support. The top layer is filled with 550 lofts down, which adds a soft buffer against the feather. Down Perfect products combine the firmness of feather with the softness of down for the best of both worlds! The outer shell is crisp 255 thread count cotton, and features corner elastics for affixing to the mattress. If you are looking for additional firmness and support, this mattress topper is for you. Contains RDS Certified Down: The goal of the Responsible Down Standard is to ensure the waterfowl in the down supply chain are treated humanely.