I looked in the archives, but there was strangely not much coverage on
this subject.

So I recently decided to get some nice new (and color coordinated) bed
linen for my Westy. With my Passenger Syncro (with the weekend bed) I
can use queen linens (the fitted sheets fit pretty nicely. However, on
the Westy things are different. The "Full" size sheets seem to be the
closest (at least in USA sized sheets) for the top bunk, but the thin
depth of the mattress means that the fitted sheet doesn't really fit
all that well.

Similarly a "Twin"  size seems okay for the lower bed, but isn't quite
perfect.

A message in the archives talked about 3/4 sized sheets in Canada. I
was shopping locally (Washington DC) so this wasn't available.

On the other paw, the sheets I got are made of "modal" (new fabric
material manufactured from Beech tree wood.) I love it. They are even
the same burgundy as my Westy.