The Storm Virtual Gravity was one of the most successful and best selling balls of all time, we just made it better. More aggressive. More strikes. The Storm Virtual Gravity NANO!Storm is known for producing the best high performance balls on the market. When the Virtual Gravity was released in 2008, it not only turned heads but gave bowlers of all skill levels an unprecedented amount of hook on even the oiliest lanes imaginable. The new Virtual Gravity Nano is intended to create a similar yet stronger ball motion built specifically for heavy oil. This can be accomplished with either a stronger coverstock (texture) or more aggressive weight block (lower radius of gyration or increased differential). As the original Virtual Gravity quickly became Storm?s all-time best seller, the new Nano is sure to follow in its footsteps...and yes, those are big shoes to fill! Looking at the original Virtual Gravity, the Shape-Lock HD weight block/core system produced a fast-revving action that especially helped bowlers look Type: Bowling Balls Size: 14 Pounds Color: Orange Color Mapping: Orange Coverstock: Reactive Resin Performance: Pro Performance Core Type: Asymmetric Finish: Matte