Storm Concept Bowling Ball size 10 Xtra-Shine applied with or without

Xtra-Shine applied with or without a ball spinner provides outstanding length and monster back-end reaction

Storm's beloved Tropical line has evolved again

The bag fits all shoe sizes

supportive build—ideal for rental centers

Lightweight outsoles

Storm Concept Bowling Ball size 10 Xtra-Shine applied with or withoutStorm Concept Bowling Ball The SPI LAB Series introduces the Concept, our next innovative release that reverses the narrative on how core cover combinations are developed for challenging patterns. The ARC Cover has the highest coefficient of friction (COF) values and is right at the USBC limit on oil absorption time. With the Concept, the coverstock acts as both the engine and the tires, while the Radius Weight Block behaves as the traction control,