Material: rayon knit, nice drape, lighter weight, nice quality, slight sheen, opaque, unlined, doesn't require a slip. Construction: simple, fine for the price. Shape: generous up top, baggy and loose on the bottom. Sizing runs big. I ordered an XL following the measurement chart and I suspect I could wear a large with no problem. The XL hid my body behind excess fabric, rather than showing a shape. It fell more like a Regency style gown than a modern dress. The top covered with fabric to spare. Probably generous enough for a larger bust. At 5'8" the XL dress hit the bottom of my ankles/tops of my feet. At least it was long enough.