The new Phaze II features both innovative core and coverstock technology, proving again that Storm is the leader in bowling innovation. This fast-revving shape, the aptly-named, supercharged Velocity Core, smooths out the backend reaction without over-reacting and avoids creating an undesirable last-second movement. TX-16 (Traction-X 2016) is what emerges from countless hours in R&D to develop the finest coverstocks on the planet. This solid reactive blend leaves an incredible footprint on the lane. The marriage between the core and the cover produces the strongest motion of any symmetrical Storm ball to date.