A coverlet is a breathable lightweight layer that is meant to be made into the bed by acting like a blanket or folded at the foot of the bed for extra warmth and layering. Traditionally Coverlets were made of matelassé style fabric. Matelassé fabric is a weaving technique used to create texture and resemble quilting.
Duvets, also known as Duvet Inserts, are pillowy, fluffy blankets that are quilted and then filled with down, feathers, or some type of synthetic material. The duvet is an insert that is protected by an interchangeable cover known as a duvet cover.