Good Question, I make as large or small as I want, seems batting that I'm looking at list different sizes,
crib 50x60
full 81 x 96
Queen 90 X108
King 120 X 120
maybe their patterns are smaller for borders, seems like they would be closer to multiplying by 12,
60x72, 72x84, 90x108 etc. this will be interesting to watch