New STX U 550 Unstrung Lacrosse Head with All Climate Performance Material White Navy Navy The new design is further equipment and training devices The new design is further upgraded with a new iST Xs Technology that gives the bat an extra stiff connection resulting with maximum energy transfer Shock suspension system allows the bonnet and head to move independently from the shell the Stallion U 550 includes dual sidewall braces to provide stability on shots and ground balls as well as the STX Forward Cant design for excellent ball retention The Stallion U 550 features STX's C Channel technology along the bottom rail to maintain strength without adding weight