Balancing the scales between skate innovation, relative performance, and parent investment, the X4 skates offers MotionFlex Technology, a more appropriate flex profile for those still developing their skating stride. PERFORMANCE TECHNOLOGIES: Digi COMP Quarter - Softer construction and MotionFlex Technology increases the forward flex of the boot for more comfort. For younger player developing their stride, this ease of flex promotes building good technique. LIGHTSPEED (LS) EDGE Holder - The blade holder that's trusted by over 80% of NHL players for a decade. This first of its kind holder features a quick release trigger to allow for fast steel replacement or service so you never have to miss a shift. LS Balance Blade - Combination of increased steel height and a 13-ft profile assists developing players with balance in all skating motions. Asymmetrical Toe Cap - Made to minimize the negative space between your boot and your toes.