The following is some pretty interesting information on a great drinking vessel :
Tempered Glassware Made in France
The original toughened glass tumbler
Duralex Picardie Drinking Glass
The classic Duralex Picardie glass is "the ultimate drinking vessel created by man." First produced in France around 1927, the design and specification has remained virtually unchanged since Saint-Gobain introduced their patented glass tempering process to the Duralex company in 1939.
Since then this design classic has become celebrated as the quintessential French Bistro glass. But the Duralex Picardie is so versatile and durable that for many decades it's been the primary tumbler for cold and hot drinks in households throughout France. Its timeless appeal is appreciated around the world and generations of young people enjoyed the Picardie and Gigogne as the water glass in school dining halls. Other classics by Duralex: Provence, Prisme, and Lys.
Duralex glasses and bowls in five classic collections in a variety of sizes.