Iron Heart's windbreaker-style jacket, constructed from 21oz Japanese serge. A heavy cotton twill similar to denim, this is the same fabric as the 21oz Wabash (just without the bleached dots), woven with indigo rope-dyed yarns which will gradually evolve in tone with wear—this jacket has some serious fade potential. . Due to the more relaxed fit of the windbreaker cut, this versatile jacket is ideal for year-round layering, with practical features including tubular knit storm cuffs, drawstring hem and an over-spec’d two-way zipper under a snap fastening placket.