Hit the road with winning speed in the New Balance 1400v4 racing flats. These shoes are perfect for interval training on the track and to take to the street on race day. Superior traction and lightweight construction will give you the edge you need when it counts the most. An excellent choice for 5k to marathon distance and everything in between. Upper:No-sew material application offers enhanced comfort, light support and flexibility. Flat laces reduce irritation. Mesh provides breathable flexibility. Midsole: REVlite midsole offers a lightweight, responsive ride. Removable insole.Outsole: Blown Rubber outsole is flexible, light and cushioned.