Track Theorem Delta Bowling Ball ITRG89 M Ortholite footbed

Ortholite footbed

Top performing balls offering great hook potential on a wide range of conditions

The Olloid Symmetric core is designed to give this ball more length while maintaining energy and creating more hook potential down the lane

5-inch wheels

Ball Featuring: Houk Design Matrix I

Track Theorem Delta Bowling Ball ITRG89 M Ortholite footbedTrack Theorem Delta Bowling Ball The Track Theorem Delta builds on the legacy of one of Tracks most trusted performers by enhancing the benchmark motion that made the original so successful. It delivers the same strong midlane read and smooth, sweeping shape while adding a sharper response to friction for increased backend motion and continuation. Compared to the original Theorem, the Delta is more responsive downlane without sacrificing