Comfort in motionthe superfeet flex series of insoles offer an excellent introduction to the superfeet experience the exible heel cradle and active aerospring full length foam combine to create the contoured shape under the foot the specialised flex design allows the insole to easily conform to the widest range of footwear the superfeet addapt system traces back to our start as the sports medicine division of the northwest podiatric laboratory in 1977 addapt encompasses the biomechanical