The New York subway is more than just a rust bucket in transit; there are some unwritten rules too. Like, don’t stop at the top of the stairs or, as a victim of an airborne nail clipping, my regretful fave; keep personal grooming personal.

Then there’s the pole huggers. Whether it’s with a full-body embrace or a tight grip with the butt cheeks—although impressive—not cool. We prototyped a little bitty to encourage people to share the pole.