Pro S1 Easier to see, harder to stop, and designed to perform like never before. Official ball of Athletes Unlimited Women's Lacrosse League and IBLA. Trusted and developed with the NLL & their world-class athletes, this is the future of the lacrosse ball. Quantity - + Sold out Quantity - + Sold out Quantity - + Sold out Shop More Signature Products - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out - + Sold out