Subivor is a "subway emergency kit" that contains a disposable "full facemask," a flashlight, a "seven inch pry bar" for window-breaking and a whistle--all in a stylish fanny pack! Be forewarned though, beard or 'stache wearers:
The efficacy of this product is not guaranteed for persons with substantial facial hair.
Oh, and we almost forgot, each Subivor also comes with a moist towelette, so if Al Qaeda comes a-calling you're all set!
This item is clearly a must have for paranoid urban commuters. As the Subivor website says:
Whether it is a train fire, a highrise building fire or worse. People should have more protection than a necktie.