Cotton Blend Duvet Cover Set

A duvet cover is the washable shell that goes over a duvet insert. The insert supplies the warmth and loft; the cover protects it and is the piece you actually launder.

This one is a silky-soft cotton blend with a moisture-wicking finish, so it stays comfortable rather than clammy through the night. It is sized to match our All-Season Alt-Down Duvet Insert exactly — Twin/Twin XL, Full/Queen, and King/CA King — so the two pair without gapping or bunching.

If you are making the bed from scratch, buy the cover and the insert together. Neither does the job alone.