Show Me Your Mumu Cliffside Sweater in Neutral. Size S, XS, L. Cotton blend. Side seam slits. Ribbed edges. Terry cloth fabric. SHOW-WK96. MM1-4701. Mumu is not simply a garment, it is a lifestyle. Spontaneous. Fun. Easy going. Unique. Versatile. Imaginative. It all encompasses the mumu, and a way of life.