Originally Posted by Burton

I'd suggest some self sealing tubes like Michlins or alternatively adding Stans Notubes or Zefal latex goam to a standard tube. You could further up that for effectiveness by going to tires with flat protection built in IN ADDITION to the tube protection mentioned.

If glass gets past that - chances are you'll need a new tire and not just a new tube. Otherwise - you should be good for the season. One cautionary note - anti-flat liquids aren't recommended for winter use. They'll be too sluggish to spread effectively and just upset the balance of the wheel.