I also have Nightowl ones, and love them. I have 10.5 and 4.5 tog ones, and double up in winter, using the others separately depending on the weather.
Mine go in the washing machine and dry either in the dryer, on the line or over the heated airer depending on the weather and what else I am washing at the time. They dry very quickly - it's not remotely the same as drying an old-style duvet - and I wash and change them regularly.
I don't use a top sheet (why would anyone do that?) and obviously don't put a cover on them, as that would defeat the object.
Good Morning Wednesday 24th June 2026
Speculation: Who Will Be In Burnham's Cabinet?


They’re light as a feather.
