The top rubber with its narrow, long pimple structure gives the rubber the greatest possible flexibility and a sensational feel. Bluefire develops incredible dynamics, especially when playing topspin, with an extremely high ball trajectory (arc) when spinning with maximum rotation and even greater catapult properties. DONIC Bluefire M2 Character: Perfect balance between dynamics, catapult effect and ball feedback Recommended for: Players who place the highest value on spin and speed with optimal feel.More product details: Speed: 110Control: 94Spin: 112 Suitability: OffensiveType of rubber: Inside pimplesSponge hardness: Medium