It comes in two different styles. 1 has a blue and white section.
The white section is for cleaning, you then flip it over to the blue side to absorb the wet stuff left behind from the white side.
I have also seen the product in a thicker, but all white (no blue) version. I think it was use on tires. But this is the product that I found best. Last 3 times longer than the blue/white one. I use a dry cloth to pick up any moisture left from the cleaning.
It really is a good product.