Introduced in 1989, "Ouverture" is Riedel's uncomplicated beginner series for customers, who appreciate good, reasonably priced wine. No types pf grape varieties or wine-growing regions disconcert the buyer. Six sizes are made for "drinking pleasure". Ouverture is lead free. Ideal for everyday use, Ouverture glasses offer perfectly shaped wine glasses at competitive prices. Measuring 8 1/4 in" (175mm), and holds 6 3/4 (180ccm) oz.