The retro 70s symbolized the era of NB's rapid take-off, because in the 1970s, Boston was the most prosperous core area of running in the United States, and the running culture has since expanded to the United States. 327 reinvents NB's classic running shoes, using more exaggerated techniques and bold color interpretations based on running shoes. The 327 is an evolution of the Vintage Running Shoe 320 and Trail Running Shoe 355, with an enlarged N-logo / vintage nylon tongue/70's rubber heel / Trail 355 sole, and a modern tooth shape on the front edge of the midsole. It can be described as a masterpiece from the runway to the runway, and the new shoe model is expected to sweep the market and lead the trend.