Bio-Fit is engineered to enhance comfort and alleviate the common foot pain symptoms, such as heel-pain, arch pain, and discomfort at the ball of the foot. Its unique four layers construction provides customized support along with unsurpassed cushioning. Rear foot shell offers anatomical arch-support, preventing the foot from over-pronating, and enhancing comfort. Cushioning EVA layer provides excellent shock absorption, making every step you take soothing with comfort. Soft, moldable foam conforms to the contours of the foot, helping alleviate pressure and calluses on the forefoot and toes. Polyester mesh lining provides a soft, friction free surface that wicks away perspiration. The result: a unique insole that offers utmost comfort and improved performance.