Calibra Tour M has a medium-hard sponge. Equipped with the brand new APS-technology, it provides very high speed and the fantastic possibility to shape your shots with the increased spin features. The APS technology (Advanced Pimple Structure) with straight shaped pimples makes the rubber adapt to the ball like never before and provides an explosive and spinny rubber that is reliable in every situation. Calibra Tour M is suitable for players with medium strong hitting power who need a rubber that helps generate a bit more speed with the lovely feeling of built-in speed glue effect. Enjoy the ultimate precision-shot-making experience!