Bought a 140cm for European-sized mattress. Just placed it on the mattress and it's short about 5cm on each side (the head and foot of mattress are OK).  I washed it prior to the first use -- I don't know if that made a difference.  If I'd known they shrink or run short, maybe I should have ordered a size that was "too large" for my mattress so that it would shrink down.