Carry A Spare! - An often-overlooked advantage of folding tires is that they can be carried on rides as spares. Folders pack small enough to fit in a seat bag, jersey pocket or suitcase (when you travel with your bike). You can even tie or tape one to your frame. This means that you can pack a spare if you're concerned that one of your tires is ready to fail or if you just like being prepared for everything.
Or "the field," this is used to refer to the main group of riders sticking together in an event or race.