PERFORMANCE TECHNOLOGIES: Highly anticipated update to the iconic Evo unstrung head. The QX2-O is built for the elusive ball carrier who relies on ball control and quick release New Therma-Loc+ hybrid thermoplastic resin retains stiffness by up to 50% better than standard nylon heads in various temps... leading to more consistency and a quicker release New Fuelcore sidewall truss orientation holds it shape exponentially by spreading force evenly across the sidewall Higher pinch for a longer channel with more hold and consistency Scoop diffuser with strategically placed ridges to reduce drag on groundballs Bottom rail designed for Mid to Low pocket placement for superior ball control and quick release Optional LOC-THROAT feature; insert LOC-THROAT for better head to handle attachment, leave out for light weight performance ADDITIONAL SPECS: Meets all NFHS, NCAA, Lacrosse Canada, and World Lacrosse men's field specifications