The RD-1 is equipped with the latest in foam technology, Surge NRG+ enhanced with supercritical foam for ultimate comfort, response and durable support for any movement. The lightweight upper continues to provide unrivaled airflow and response with added anti-stain-treated engineered mesh to keep you feeling fresh. A 10 mm heel-to-toe drop provides control for amplified acceleration moving you toward your goals faster. Technology-Surge NRG+ enhanced with supercritical foam for ultimate response and durable support for any movement Features-Engineered mesh upper -Grooved outsole -Molded sockliner-10mm heel-to-toe drop Material- OBC supercritical midsole foam -100% polyester engineered mesh upper-2 mm EVA Strobel-Rubber outsole Fit small - we recommend going up 1/2 size
