Used DeMarini CFF34 19 CF Insane 2019 34 25 Fastpitch Softball Bat Comp 9 Black Blue Tan Brand new outsole designed for FuelCell foam delivers a Brand new outsole designed for the player incorporating 3 distinct areas for baseball specific movement Acceleration (see pics) Ventilation ports along the front shell and knee cap accelerate airflow to keep your legs cool Hinged knee cap promotes independent movement during strides Removable liner delivers a cushioned fit that minimizes moisture accumulation Anatomical design forms to the shape of your leg for maximum comfort Adjustable upper lock and calf strap offer dual support to ensure a perfect fit Shin: Ribbed polyethylene cap Knee: Polyethylene cap Thigh: Extended foam paneling Calf: Anatomical molded foam Paraflex+ composite barrel design Half and half two piece design 3 Fusion endcap 3 Fusion handle Demarini RCK knob