A much thinner top rubber, which is under a correspondingly high tension, leaves room for a thicker sponge, which brings even more power. The Bluestorm offers noticeably greater dynamics with consistent spin and speed characteristics and thus sets an indication of where the trend is heading. The thinnest sponge here is 1.9 mm, the average sponge thickness 2.1 mm - and the thickest variant is called max +, because this sponge is even thicker than in the usual Max versions. The Bluestorm comes in five variants - find your Bluestorm!