This is actually a double duvet: quilt hanging by a slight pressure to a larger quilt. Separating the following temperature / season. Right now I only use the smallest and it suits me perfectly. Apart from that, this is good feather duvets, pleasant and quality. We have to wait a bit for them to take their swollen appearance, this is normal. Note that, afterwards, we can not put them in the plastic bag in which they are delivered.