Uncovered * X-large 1 Pair * Dual Durometer For Medial-side Or Spur/fascia Relief And Maximum Comfort While Standing Walking Or Running * Medium-durometer Silicone In Main Body Efficiently Absorbs Impact And Recovers Quickly * Softer Silicone Blue Zone Area Provides Increased Comfort And Pain Relief * Retains Shape - Will Not Deform Or Degrade With Use * Optional Anti-microbial Cover Absorbs Odor Prevents Bacterial Growth And Allows Foot And Insert To Slide Easily Into The Shoe * Washable And Reusable *