From Powell Peralta:
Built in a new production area in our Santa Barbara, California, facility, FLIGHT™ decks are stronger, thinner and lighter than a 7-ply. You'll get the feel of it in an hour or two and begin to realize you can do things riding a Flight deck that cannot be done on a 7-ply. Flight decks allow you to extend your limits, because they let you ollie higher, flip faster, do tricks more easily, and they don't break in two like a 7-ply.