The Serfas Seca Survivor is a great training or urban riding tire.  These tires are made in the same factory with the same casing as those tires that start with A from that company that starts with S that you know and love, but these cost less.  They are very puncture resistant, and that puncture resistance goes from the bead to the bead not just under the center of the tread.  The tread compound is designed for ultra long life.

Sizes are: 700x23, 700x25, and 700x28.
rated up to 125 psi