Drink From Flowers. Coffee seems to taste better when sipped from the beautiful Oiva coffee cup. Sami Ruotsalainen designed this cup and chose Maija Isola’s beloved Unikko pattern to give it life. Oiva's hard porcelain ensures a long lifespan; the glazed colors and patterns remain vibrant. It’s dishwasher, microwave and freezer safe. This Oiva piece is stamped with a special Unikko 50th Anniversary mark.