Now in its fourth incarnation the GEL-LETHAL MP4 benefits from the Trusstic System for great stability as well as Rearfoot GEL for cushioning.

REARFOOT GEL CUSHIONING SYSTEM - Attenuates shock during impact phase and allows for a smooth transition to midstance. TRUSSTIC SYSTEM - Reduces the weight of the sole unit while retaining the structural integrity of the shoe. COMPRESSION MOLDED EVA MIDSOLE - Provides cushioning under the foot. REMOVABLE SOCKLINER - A sockliner which can be removed to accommodate a medical orthotic. CALIFORNIA SLIP LASTING - For stability and comfort. Uppe is stitched around a canvas or EVA board and directly attached to the midsole.