From the website:
Paved with good intentions...
This set of 12 double-sided terrain cards (plus bonus terrain inside the covers) features a selection of downtown locations that could be the setting for all sorts of modern-day urban encounters. Design your own streets and alley layout, and add a small restaurant or studio apartment. Mix and match the tiles to create your own downtown locale, or use the cover cards as a guide.
Each card measures 5 by 8 inches, and is printed on thick glossy cover stock. The complete printed set is gathered in a clear resealable envelope for safe and easy transportation.
From the cover cards:
12 Double-Sided Terrain Cards
Set includes: Twelve 5x8-inch double sided map cards.
Bonus bus stop and sidewalk with tree tiles on the back of the cover cards.