A duvet cover is used as an envelope to hold a duvet. To insert
the duvet into the duvet cover, first spread the duvet cover flat
over the bed. Open the bottom of the duvet cover. Find the top of
the duvet and grab hold of the two top corners.
The tricky part is sliding the duvet into the duvet cover. As
best you can, while continuing to hold tight to the duvet corners,
work the duvet up to the top of the duvet cover. Place one corner
of the duvet into the corresponding corner of the duvet cover. Hold
tightly onto that corner from the outside. Next, do the same at the
other top corner. Hold tight to both corners and pull them up to
the top of the bed. Make sure the middle top side of the duvet also
lines up with the middle top side of the duvet cover.
Now, as best you can, slide the duvet cover down over top of the
duvet. Both the duvet cover and duvet will likely be bunched up,
but keep gently working it down. It is a bit tricky. The goal is to
get the bottom two corners of the duvet aligned into the bottom
corners of the duvet cover. When the duvet and cover are mostly
aligned, give the covered duvet a good shake to even out the
contents. When you are happy with the duvet distribution, do up the
bottom of the duvet cover.
Now, snuggle up.