I still have Battle Dressings in my FAK's but If those become no longer useable (contaminated), I will start carrying 2-4 old fashioned OB pads. They make great medium size battle dressings. You just place them neatly in a zip lock bag, squeeze the air out, and seal the bag.
No, I am not a Doctor, or corpsman, or EMT,,,,,I just played a Medical Officer on a Coast Guard Cutter.