I said Harlem - I meant Washington Heights - they are the deepest part of the system (3-4 stops there), and are the exception that proves the rule. That said, I still hold that "Moist towelettes" are useless except for getting shmutz off your hands

Of course, this is from a guy who, when he used to travel by subway usually had 50+ lbs of gear with him

I just think the kit the guy was selling wasn't great, but not horrible. A better kit would be a N-95, a flashlight, a Multitool, maybe a cylume stick, and a bottle of water