The adidas Challenge Force is a 5-ply blade for the offensive game whilst maintaining a high level of control. Limba wood of medium hardness is used as the top and second layer for a good balance between speed and softness that is required for a stable topspin. The adidas Challenge Force provides a very soft touch, a clear vibration and a high sound while maintaining the level of speed as the offensive 5-ply blade of 6.0mm thickness. The Challenge Force can be called as the "classic" offensive blade. If you are looking for a medium fast blade with a soft touch and good control, the adidas Challenge Force should be your first choice!