If you're looking for a sole that has extra slide

Helps maintain ball reaction

and Slow = thick

This core is paired with the Ai-40 coverstock additive to produce a flip and angularity reaction like the Katana ball but at an upper mid-performance price

Coverstock: Prime Solid

Storm Trend Bowling Ball Select Weight:12 lbs. If you're looking for aStorm Trend The Storm Trend is a high performance bowling ball in Storm's Signature line of bowling balls that they have created in collaboration with professional bowler Jason Belmonte. This ball combines the proven and popular R2S coverstock with the Piston core to offer a ball that provides better carry by creating more angle into the pocket. This ball gives a quick response along with a more defined breakpoint regardless of what your rev rate is.