If there is one piece that represents the heritage of adidas Originals apparel, it is the SST track jacket. This women's jacket reinvents the icon for winter with premium down insulation and a minimalist design. It's built with a breathable mesh lining and sheer outer layer that reveals the down filling. The jacket uses body-heat mapping to target double insulation where extra warmth is needed. Soft ribbing at the cuffs and hem and a ribbed baseball collar stay true to the original SST.