A customer just gave me some vests for emergency responder staff. They say no dryer and no ironing. It feels like a fireproof polyester, but he is supposed to call the mfg tomorrow. Obvriously, I can't use heat press. They want information transferred to these vests. Is there a cold press transfer material for this kind of fabric. If so, where do I get it and how does it apply. Also, how secure is it once applied?