Transformer Extra Slow is a highly disruptive antispin rubber that has long inverted pips and now features the extra slow sponge from Der Materialspezialist Reflection. This combination allows for high levels of control and speed reduction. The increase in absorption of energy allows for even shorter blocks that are difficult for your opponent. The thicker the sponge, the slower it is. IMPORTANT- Glue all Der Materialspezialist antispin rubbers with the glue sheet (should be ordered separately) using the instructions provided. If instructions are not followed, refund claims for damaged antispin rubbers will not be honored.