New Balance - 770 JKL (Green/White)*All shoes are listed in mens sizes The infinitely versatile 770 was first introduced in the early 90s during an exploratory era of research and development at New Balance. Initially conceived as a cross trainer, it was quickly adopted by the tennis category, described at the time as the most stable court model available. Thirty years later, New Balance Numeric is proud to reintroduce the 770, adopting its best qualities and adapting them for