The perfect combination of the large-pored , blue sponge and the extremely spin-friendly top rubber is a high-tech coating generation originated in the proven FORMULA DONIC FD3 technology. The upper rubber with its narrow, long nub structure gives the rubber the greatest possible flexibility and a sensational feel. Especially in the topspin game BLUEFIRE unfolds incredible dynamics with an extremely high arc (arc) of the ball in the spin - with maximum rotation and even increased catapults. DONIC BLUEFIRE M1 Hardest sponge variant - next to the M1 Turbo the fastest and most dynamic rubber of this high-tech series. Character: Super dynamic sponge, extremely spin-friendly top rubber Recommended for: Top players and players with high training load , who prefer harder pads.