Cotton casings are by far the most popular form of casing for a modern day silk duvet. Cotton casings are available in various grades but it is important to consider thread count when making a purchase.
There is almost an endless choice for duvet casings. Cotton, silk, polyester etc.. Traditionally the Chinese used a very course threaded casing for their silk duvets.
As of yet there is no official British Standards tog rating for silk duvets. This leaves the market in a bit of turmoil as some suppliers may recommend one thing, and others something completely different.
