Yasaka RAKZA 7 is a newly developed rubber that features a top sheet made primarily from natural rubber gum, significantly enhancing grip and spin power. This top sheet is paired with the innovative "Power Sponge," and together they create the Hybrid Energy rubber RAKZA 7. When hitting the ball with force, the rubber grips it effectively, allowing for precise placement in both direction and length. The rubber also excels in serving and short returns, offering sharpness and control. Additionally, the increased natural gum content enhances the durability of the rubber.