iocTT.com :- The most advanced forum on table tennis

But I also have to wonder if the sponge name for Absorber Sponge Heavy and Absober Sponge Drop got swapped because Hevey has a lower hardness of 45 than drop with 48. Then again may be it is the way they just named them & has no correlation with hardness , and so I may be overthinking it.

The way I would remember is S is for Slice for away from the table choppers & B is for Block for close to the table blockers