Share 'Use of Personal Leather Helmet Policy'

Brothers and Sisters, I'm looking for some samply policies from departments that allow their members to wear leather helmets. Is there anyone out there that is allowed to wear leather as long as they maintain it on their own? If so is their a department policy regulating that? I'm just trying not to re-invent the wheel...if there is a good policy out there, I'd love to get a copy. Thanks for t…