Based on customer feedback, this style runs slightly narrow.The WW850 combines a C CAP midsole, a solid rubber outsole with Ndurance, and features TrueBalance a special system of components designed to create natural instability. This patent pending balance board technology features a soft, flexible sole unit with a spring system design and a rounded bottom. Every step you take, your body works to maintain your natural balance which in turn, activates your muscles. TrueBalance helps tone your muscles from your legs to your glutes to your core. TrueBalance Sole A system of components which create natural instability Midsole softer durometer with undercut, TPU Component a series of opposing leaf springs that run from the heel to the midfoot, Gasket softer durometer, Outsole Unique rounded bottom design. C CAP® Midsole Compression molded EVA for cushioning and flexibility Solid Rubber Outsole Long wearing durability Ndurance®

Price:  $89.98