The ON RUNNING ZERO wind jacket is an ultra-lightweight (just 61g) model for training outdoors. Its compact dimensions and the fact that it can be stowed in its own pocket means that you can always have it with you. Made of lightweight ripstop nylon, which provides full protection against the wind and the DWR treatment prevents the material from soaking through in light drizzle. Half-zipped with a practical zipper. The sleeves, hem and collar are trimmed with elasticised, form-fitting piping. Underarm ventilation panels. ON RUNNING ZERO men's jacket 17400477-twilight