The first generation of MacBook Pros were *notorious* for running hot -- thermal guns were registering the bar above the function keys at 120'F to the touch.
Anyhow, my experience using the iLap with this generation of MBP that it made a noticeable difference with the MBP being cooler to the touch.
It's not a cooling pad per se, ... it has no fans. However, it is made of aluminum, so the MBP seemed to dissipate the heat right thru the iLap. If you look at how the iLap holds the MPB, I think it'll make more sense.