It is made in 30x30 cm squares with a complete trim. It is very soft, provides a lot of comfort and is breathable and lightweight. Its exterior fabric is made of completely natural 100 Percent cotton with a down proof treatment that prevents feathers from moving to the outside. It can be washed in the washing machine on a gentle cycle and air dried for optimal maintece of the duvet. You can wash it with two or three tennis balls so that the feather is well spread out.