Your review: I like the shape, a tilted rectangle with enough heft that you can actually use it to scrub.
Pros: While it lasts, the scrubbing side is a good surface . . .
Cons: but it deteriorates very quickly. Within a few days the wound-up fibers start to loosen, then don't scrub very well anymore. At that point, I take scissors and trim down the surface to try to make it tight again.