The Ensley Hypoallergenic Waterproof Mattress Cover was ordered for a child's better. Since the cover was for a child's bed, I wanted something lightweight yet waterproof. I have ordered covers before which had a strong chemical odor. This cover did not have an odor, which is a big plus, as there are no retardant chemicals in the fabric or plastic. The elastic skirt made the cover easy to stretch over the mattress. The top of the cover feels like a comfortable terry cloth robe.