The Metalbone Carbon 3.4 introduces two groundbreaking adidas technologies to the 2025 Metalbone line. These include Power Extra Grip, an extended racket handle that increases inertia during shots, and a multi-walled Low Poly construction in the core and frame that increases stiffness – both essential for attacking play. In addition to these innovations, Octagonal Structure, a tubular carbon fiber frame, reduces torsion and improves striking accuracy. The combination of EVA Soft Performance rubber and Carbon 6K fiber ensures perfect balance, while the Spin Blade Decal relief guarantees precise spin effects.  Octagonal StructureThe strength of the Metalbone series comes from its tubular carbon construction, which provides stability and high torsional resistance. Placed in the frame, it guarantees maximum stiffness and offers excellent precision with every type of shot – the perfect balance that every top-class racket requires. Low PolyInnovative design in key areas of the racket. This technology gives the frame and core a polyhedral shape, allowing for better distribution of force upon impact. As a result, the racket's structural stiffness is significantly increased, providing improved performance on the most powerful shots. EXTRA POWER GRIPThis innovative, longer grip significantly increases the racket's inertia during shots, especially offensive ones. The greater-than-usual distance between the bottom edge of the grip and the top of the head allows for faster swing speeds and more powerful shots.