Designed for competition, New Balance 1400v3 running shoes are lightweight racing flats that stay true to the road warriors that fell in love with the originals. Runners will also love the secure fit of the barely-there upper that holds the foot in breathable and flexible protection. These shoes will help you stay light on your toes for distances up to a marathon or everyday training.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.