LACAUSA Sofia Slip Cami in Blue. - size L (also in ) LACAUSA Sofia Slip Cami in Blue. - size L (also in ) 84% rayon 16% nylon. Crinkled fabric. Intentional color variation throughout. LACR-WS103. LA11299. LACAUSA is born of the unique space where city, country, desert and ocean converge, Los Angeles.