A stylish choice for the runner seeking comfort, the 660v3 offers the New Balance patented ABZORB cushioning technology for a smooth and soft ride that lasts mile after mile. The shoes features medial post which consists of higher - density compression - molded EVA, located on inside edge of shoe, to help prevent over - pronation. This helps you to keep a stable and comfortable position while you train. Type: Stability Weight: 316 grams (11.5 oz) Features 12mm drop: due to variances created during the development and manufacturing processes, all references to 12mm drop are approximate Medial Post consists of higher - density compression - molded EVA, located on inside edge of shoe, to help prevent over - pronation Synthetic / Mesh upper