Product Description The KR Strikeforce Pink Ribbon Bowling Ball, also known as the “Be Brave & Strong for The Cause” ball, is a distinctive polyester bowling ball designed for both recreational use and display, featuring a vibrant pink ribbon design symbolizing breast cancer awareness. Crafted from 100% polyester with a plastic coverstock, this USBC-approved ball offers a consistent, straight roll, making it an ideal spare ball for bowlers of all skill levels on any lane condition.Undrilled Bowling BallPerfect For All Ages: Available in 8lbs, 10lbs, 12lbs, 14lbs, 15lbs, and 16lbsPolyester Design: This bowling ball is made out of polyester, making it a great option for recreational and beginner level bowlers. It also makes for a great spare ball for more competitive bowlers.USBC Certified: This bowling ball is USBC certified, allowing you to use it in your leagues and tournamentsColor: Multi *Please note that colors may slightly vary from image shownCoverstock: PolyesterWeight Block: Traditional 3-PieceFactory Finish: High Gloss PolishFlare Potential: 1″ (Low)Radius of Gyration (RG): HighDifferential (Diff): LowIntermediate Differential (Mass Bias): 0.000