Aravon’s unique process that embeds a rigid bi-fit board in a polyurethane outsole allows the Stridarc sole unit to ‘rock’ through the gait cycle. Running the length of the shoe, the bi-fit board works with the contoured outsole to gently but firmly cradle the foot as it moves through every step. This structure may feel different at first but the result is the mitigation of impact reactions and the elimination of the thousands of tiny joint and muscle compensations that cause fatigue.