the only reason this label is on flannel sleepwear is because long ago before central heat and air children would stand too close to space heaters and catch fire. this happened many times which led to the labeling and outlaw against using flammable materials for sleepwear. since most people do not use portable heaters which can catch anything on fire it is safe to use these in quilts. i remember many children when i was growing up suffering burns from material that wasnt flame retardant.