The name duvetyn comes from the French word duvet, meaning down. Wool or wool-blend commonly, the finish is napped, sheared and fulled. This creates a downy nap which covers its weave which is usually right-hand twill. It is softer and more lustrous, though its nap isn’t quite as long as that of fleece.
Cotton duvetyn is usually called suede cloth.
Uses: Coats, uniforms, suits; the heavier blanket cloth for blankets and Hudson’s Bay “point” blanket coats