Function meets performance with the New Balance London Edition Fresh Foam X 880 v13. Featuring a plush and supportive Fresh Foam X midsole and NDurance rubber outsole, this shoe delivers enhanced performance and comfort with each step. With a design inspired by the TCS London Marathon, this shoe is a must-have for marathon runners and observers alike. Fresh Foam X midsole foam with approximately 3% bio-based content delivers our most cushioned Fresh Foam experience for incredible comfort. Bio-based content is made from renewable resources to help reduce our carbon footprint Synthetic/engineered mesh upper Upper features no-sew construction for a sleek fit and feel NDurance rubber outsole technology provides superior durability in high-wear areas to help get more out of the shoes Blown rubber outsole provides superior rebound Adjustable lace closure for a secure fit 10mm drop; due to variances created during the development and manufacturing processes, all references to 10mm drop are approximate TCS London Marathon edition.