DHS Hurricane 3 Neo Liang Jingkun Backhand (red) rubber is a specialized version of the Hurricane 3 series, tailored to match Liang Jingkun's playing style. Sponge Hardness: 38 degrees, offering a softer feel suitable for backhand play. Sponge Color: orange sponge, known for its elasticity and ease of spin generation. Thickness: 2.1 mm