O-ports expand the conventional sweet spot by up to 54%, turning it into a sweetzone, allowing players to hit their best shots. More often.
O3 engineered racquets are created through a one step fusion process that utilizes the strongest structure known to man, the Arch, creating the frame's O-Ports. These O-Ports stabilize the racquet giving you more control on off-center shots.
By replacing traditional pin-sized string holes with revolutionary giant O-Ports, a super aerodynamic frame has been created with a more responsive stringbed. This increases the sweet spot by 54%, creating a Sweet Zone, which means you hit your best shots more often. What's truly impressive is that the Prince engineers are able to do this all without enlarging the racquet head, increasing its length, or adding weight!