Okay, I will weigh in on this one. I have several mesh underwear bags in several different sizes for the pre-cuts' washing. I wash all my fabrics before I use them in quilts. When I started, I washed in warm water and those little charms shrank 1/2 inch on one side but not the other so then I started washing in cold water. With the latest invention of good quality cold water detergent, I can now wash them and they shrink ever so slightly if at all. So they get put in the mesh bags to wash and I lay them out flat on the top of the washing machine when they come out of a 5 minute trip through the dryer. When dry, I iron and starch everything after it is washed so they are given hot heat after washing. So, when I give a quilt, I let them know that that the quilt should be washed in warm/cold water. If they need to wash the baby quilt in hot water, who cares, the baby doesn't mind if it shrinks a tad and after all, they drag them around and they get worn anyway. My two cents.