Show Me Your Mumu Sweetheart Sweater in White. - size L (also in M, S, XL, XS) Show Me Your Mumu Sweetheart Sweater in White. - size L (also in M, S, XL, XS) 68% acrylic 32% cotton. Made in China. Machine wash. Midweight knit fabric with ribbed trim. SHOW-WK152. MS3-4047. 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. Shop the latest in fashion from Show Me Your Mumu