Vintage Nike MB-71 Mesh Jacket from Fall 2000. MB-71 is a rare vintage Nike line with nearly no information online. I haven’t seen anyone mention it before, and it’s definitely slept on. They released a WB-71 line for women and an MB-71 line for men. The 71 probably represents the first year Nike used the Swoosh, while “M” and “W” likely indicate the intended gender for which the jacket was produced. I’m not sure what the “B” stands for, so if you have any info about this line, feel free to reach out to me on Instagram @welltosell