Aetrex Casual 600 Series. Designed to provide maximum foot comfort and protection in casual and comfort footwear. These tri-density orthotics feature a high-tech Carbosan top cover that cushions the foot and absorbs shock forces. This innovative material is anti-odor and anti-bacterial to help keep your feet in a healthy, clean environment. Lynco Casual orthotics are light-weight, resilient and provide unmatched support and stability. Fits comfortably in most footwear styles.