Zappos.com is proud to offer the Aetrex - Men's Low Arch Orthotic Insole (Multi) - Footwear: Scientifically designed to comfort and support, the 'Men's Aetrex Low Arch Orthotic Insole' is the perfect complement to your favorite pair of kicks. ; Innovative CS3 Gel System strategically places different gels based on your arch type. ; CopperGuard Cover with advanced Cupron Fibers helps to prevent bacteria and odor. ; Hi-tech Cobra support system provides optimal stability and balance. ; Soft gel absorbs shock forces and cushions your heel. ; Deep heel cup prevents pronation and provides rear-foot control.