The smooth surface is extremely tacky and capable of producing tremendous spin. Great for returning heavy spin, but unable to create spin of its own. The pips face outward and there is a layer of sponge under the rubber. Pips are best for hitting and smashing due to the reduced surface area that comes in contact with the ball. Long pips Narrower and longer than short pips, this surface is generally used for defensive play to return offensive shots with unpredictable results.
Some long pips are capable of creating modest spin on their own.
Elasticity and tackiness of rubbers diminish with use and with age. During play, dust particles penetrate the rubber causing it to lose its tackiness. Exposure to heat, light, and air causes the rubber to deteriorate. As the rubber s characteristics change, the player must adjust his technique. This means that more effort is needed to execute the same shot.