Nittaku Narucross EX rubber has the Narucross "cross system" with "Max Tension Technology" for the topsheet and sponge. Maximum tension without speed glue for a dynamic offensive game.

Narucross EX comes with two sponge options: Hard or Soft. 
The Soft version offers extra touch and control 
The Hard version offers extra speed with good spin.

Brand Nittaku   Type: Smooth   Speed: 90   Spin: 88   Control: 73   Hardness: 30   Sponge Thickness: 1.9,2.1