New Balance Women's WR1223 100% Mesh and synthetic Motion control ABZORB FL midsole foam provides an amazing blend of comfort and performance with DuPont Engage and isoprene rubber ROLLBAR TPU posting system minimizes rear-foot movement that, when combined with TS2 system, achieves the ultimate in motion control ABZORB SBS is an engineered, non-cellular elastomer designed to provide optimal shock absorption and no compression set NLOCK is an integrated lacing and webbing system that provides optimal fit, support and security