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Tanks are tough and strong and so is the Motiv Covert Tank. Motiv created a new coverstock that combines the best of urethane and reactive resin. The Frixion Microcell Polymer coverstock absorbs oil much slower than reactive resin but unlike urethane does allow some absorption. This coverstock enables the ball to generate more continuation along with better pin carry while maintaining traction. The Covert Tank offers more versatility than urethane balls to better match more bowling styles due to the strong Torx core. This core has a higher differential that creates more track flare, betters backend motion, and reduces the amount of oil distribution on the lane.