The sponge hardness is 38 degrees for Glayzer and 42 degrees for Glayzer 09C. Comparing the Glayzer with the Dignics 05 and the Glayzer 09C with the Dignics 09C respectively, they are two degrees softer.

In general, rubbers with harder sponges require faster swings that can bring out their speed and spin performance.

On the other hand, rubbers with a softer sponge do not offer the same maximum speed and spin performance as a harder sponge, but it is easier for the rubber to hold the ball, making play more stable. It is easier to use for players who are not confident in their swing speed, and it is also easier to maximize the potential performance of the rubber.

The Glayzer series, which is softer than Dignics*1, is a rubber that can help the improvement of a wide range of player skills.