I used to work in a shop where most of the stock had 'dry flat away from direct sunlight' on the label. I always assumed it was a disclaimer, as the stuff was unwashable, and no normal person would go to such lengths to clean their clothes
.
Lying the items flat on a towel and reshaping them, then rolling the towel with them inside and then popping the 'parcel' on the radiator for an hour usually dried them enough so that I could risk finishing them hanging on an airer, though.
*disclaimer - I had 75% employee discount, so wasn't to fussed with the results.