Show Me Your Mumu Best Pants in Blue. - size S (also in ) Show Me Your Mumu Best Pants in Blue. - size S (also in ) 100% rayon. Dry clean only. Elasticized waist. 31 at the knee breaks to 38 at the leg opening. SHOW-WP60. MF7 95. 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.