Enjoy complete comfort with every workout in the Apex Reina Runner athletic shoe. Formerly an Aetrex style, this advanced women"s running shoe features Mozaic� Customization Technology, so you can customize the fit to your needs � or remove the two insole layers to accommodate any orthotic. The highly breathable OH2 Flo upper keeps your feet cool and dry, while the external heel counter and performance insole provide superior support and shock absorption in the Apex Reina Runner shoe.