This is a totally new kind of cleaning sponge !
It has been developed specially for cleaning pimple-out rubbers. For this purpose the rubber cleaner (any standard cleaner will do) has to be applied on the sponge, not on the rubber.
However, this sponge can also be used for inverted rubbers. It is very good for sticky rubbers, as it is very soft and will not scratch the surface. For this purpose the rubber cleaner can be applied on the rubber as usual.
This sponge is "Made in Germany". The SpinLord logo is engraved in the handle side.