I seem to remember that the ARRL was looking into the idea of standardizing ARES apparel, probably around a vest. I'm sorry I can't be more specific, but I seem to remember an ARRL Board resolution on this. If you're seriously thinking of creating your own vest, you might want to check with the ARRL first. Maybe Steve Ewald at the ARRL would know what's going on. 73, Ralph KC2RLM Chatham NJ ARES/RACES