The New Balance 1400v6 running shoes are back and ready for race day. These ultra-lightweight racing flats feature the same responsive and springy REVlite midsole and barely-there FantomFit upper support. The update comes from a lightweight, yet structured upper material with a new tongue construction for a streamlined fit thats perfect for events like the 5k, 10k, and Marathon. Upper: FantomFit is a skeletally engineered upper that provides ultra-light support and fit. Padded tongue and heel collar enhance instep comfort. Lace-up front offers an adjustable fit. Mesh offers breathable flexibility. Midsole: REVlite midsole offers a lightweight, responsive ride. Removable insole. Outsole: Blown Rubber Outsole enhances durability for high and longer wear.