The finishing of a down duvet, what keeps the filling in place, is a choice between two approaches.
Cassettes
Cassettes are closed compartments, made by inner walls in the fabric. Every cassette carries its own portion of down. The distribution stays tight, the duvet looks neater, the filling cannot shift between compartments.
Channels
Channels run in long lanes along the length of the duvet. No inner walls. The filling can move slightly within each channel, and adjusts to your body.
Our choice
We have worked with channels for generations. Three reasons.
The first: air flows through. The duvet can breathe. Between every channel warmth can spread.
The second: the filling moves along. When you turn onto your side at night, the down shifts with you towards your shoulder. A cassette cannot do that, it stays tight in place, even where your body draws away.
The third: maintenance is workable. When a channel has lost some down after years, we can refill it individually, without opening the whole duvet. A cassette duvet must be treated as a whole.
Cassettes have their place, especially for those who like the tight look. But for the way we make duvets, the channel is the right answer.