M-421a Jackets And Coats GreenBuzz Rickson's "M 421A" lightweight jacket made of lightweight cotton with a tightly woven satin back outer fabric. The construction features a shorter length and a silhouette defined by essential lines. Back pleats are integrated to promote mobility. A characteristic element of the construction are diamond shaped elbow protectors, integrated without visible seams to preserve the linear profile. Solid color Tightly woven back satin cotton outer fabric