Show Me Your Mumu V Right Back Dress in Green. - size L (also in ) Show Me Your Mumu V Right Back Dress in Green. - size L (also in ) Poly blend. Hand wash cold. Fully lined. Back cut-out with button closures. SHOW-WD232. MR6 565. 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.