This special sponge scourer is designed to remove dirt effectively without scratching.
It is safe to use even on delicate surfaces such as Teflon.
This is due to a special structure which lifts the dirt as if you were using your fingernail, gently but effectively.
One side is a scourer type surface and the other is more like a standard sponge, the cleaning action of either side is far superior to any standard sponge or scourer, however offering impressive cleaning ability whether used wet or dry.