Box of 135 4"x4" tumbled travertine tiles, enough to cover at least 15 square feet. Travertine is a durable stone with unique natural holes and variation; can be used indoors, outdoors, on floors, walls, you name it. These go for $8/sf.at the tile store. ) Photo may be representational. The wood boxes the tile lives in may be a little loosey goosey.