Englin's Presents the WR8511SP from New Balance NB ZIP controlled cushioning in heel provides durable responsiveness Removable full-length insert of ABZORB cushioning provides added comfort Abzorb cushioning in the forefoot for exceptional shock absorption ACTEVA LITE premium lightweight midsole provides optimal resistance to compression set - 24% lighter than standard foam Dual Density Collar uses both a softer density foam against the foot for cushioning, and a firmer density foam for support Blown Rubber Forefoot for lightweight cushioning Ghille lacing system offers support N-Durance rubber compound for maximum outsole durability Synthetic/Mesh upper provides lightweight comfort and support Reflective detailing enhances your visibility Shoe Weight: 268 grams (9.5 oz)