Show Me Your Mumu Crosby Sweater in White. - size L (also in M, XL, XS) Show Me Your Mumu Crosby Sweater in White. - size L (also in M, XL, XS) 100% cotton. Made in China. Machine wash. Midweight knit fabric. SHOW-WK160. MF3-5457. 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