The STX Stallion U 550 Complete Lacrosse Stick has an updated throat design. Overall design is 5% lighter than the NFHS model, while maintaining the same great levels of performance. C-Channel Technology provides extra strength for checking and ground balls. The U-550 also features STX's signature open sidewall in the read of the head that flexes on checks and ground balls in order to preserve durability. The trademark dual sidewall bracing system provides stability when making plays. The bottom rail has been designed specifically for high pocket placement to give your maneuvers added power during gameplay.