response: I am not sure about this allergy part but I can tell you that natural fibers indeed have the benefit of comfort
original_response: Yes I agree natural fibers are usually more comfortable. Some are actually made through geological processes.
history: I really enjoyed wearing Cardigan sweaters in the fall or winter.  I think it adds a bit of sophistication to a person's wardrobe. Nice that you enjoyed that, do you prefer the ones that are machine or hand-knetted? I prefer the knitted ones, my mom use to make cardigans for women Speaking of cardigans for women, did you know that Coco Chanel is the one credited with popularizing that ? I didn't know that, I always prefer wool cardigans, but the can now be made with cotton or synthetic fibers too Speaking of synthetic fibers, I know that those are made with chemical synthesis, did you know that ? No, I didn't know that, I know that there are people allergic to them
knowledge: Synthetic fibers can often be produced very cheaply and in large amounts compared to natural fibers, but for clothing natural fibers can give some benefits, such as comfort, over their synthetic counterparts.