ZAP Cloth Zezo-Fiber - 10

What size are these? the ad says 8" x 8.5" but i haven't seen any other zip cloths other than 16" x 16" size.

Are these packaged individually, when you get 10 in a pack?

What is the difference between the orange package and the pink package cloths?

Are these cloths reusable? i.e., can you rinse them and use them again? or, somewhat like magic erasers, are they largely single use only?