Check the listing for details. Thailand Flag Patch Iron Sew On Embroidered Badge Thai T Shirt Trousers Applique. Condition: New. Listed at 3.70 USD. Lay your cloth on a flat, heat-resistant surface like an ironing board. Remove the iron and allow the patch to to cool. Lift the towel and check to see whether the patch is fixed on securely by gently rubbing at the edge with a finger, trying to lift it.Lay your cloth on a flat, heat-resistant surface like an ironing board. Remove the iron and allow the patch to to cool. Lift the towel and check to see whether the patch is fixed on securely by gently rubbing at the edge with a finger, trying to lift it.