Step into the ring with the AMF Sumo SE bowling ball.
The Sumo SE Features the F80 Solid reactive coverstock finished to a 1500-grit polish. This extremely aggressive coverstock matched to the Sumo Symmetric core allows for a dramatic motion on medium-heavy oil conditions.
Lighter colored resin swirls are common on the Sumo SE. This is a product of the manufacturing process and doesn't affect ball reaction in any way.
