by Shingo Numata In the fall of 2026, MUNIEQ launched the Open-Back Wind Jacket, an ultralight wind shell built around an entirely new concept. As the name suggests, it's a wind jacket with an open back. The Beginning: A Chilly Trail Running Race The idea came to me during a late-autumn trail running race. The course moved between sheltered forest sections and exposed grasslands swept by cold winds. As conditions changed constantly, so did my need for an extra layer. I fo