I used Hobb's 80/20 recently in a baby quilt and it did shrink up a bit, but I deliberately washed it in HOT water & dried on hot as well and I expected it to draw up a bit.
I try to make my baby quilts as bulletproof as possible and the hot wash/dry is the final test; I like to be able to tell the parents that it's safe to wash it in hot water occasionally if the little one has an accident on it.