I've washed my things in both hot and cold water and have yet to experience any noticeable shrinkage. That is not to say that it will not shrink, just that in my experience, I've not had it happen. I do notice that for whatever reason my pieces with that yarn do seem to have a weird effect along my BO edge. Only along my BO if I don't BO EXTREMELY loosely, I have it tighten and the piece with sag there pulling my pieces out of square. Blocking does NOT seem to help this issue. Otherwise, I find this yarn to be a dream.