Mug Troquet 320 ml made of tempered sodium glass. Tempered glass is processed by controlled thermal and chemical treatment and is stronger than regular glass. Due to its non-porous, stain proof, smooth, glossy surface tempered glass is 100% hygienic and anti-bacterial material. French glass Luminarc is a wide range of glassed, shot-glasses, platters, plates, salad bowls and mugs as well as dinner sets and ovenproof dishes. Luminarc products are present all over the world for many years now, and they are generally acclaimed on every market, regardless of current pattern or colour tendencies.