The New Balance 1500T4 Men's Racing Flats Shoes in Hi-Lite features Bootie construction for a custom like fit. The innovative REVlite midsole provides premium responsiveness and durability at a 30% lighter weight than other foams with comparable performance. No-sew material application. Synthetic/mesh upper. The Boa System® features a midfoot canopy and heel wrap for a truly customizable fit.