Practical, simple, sophisticated. This Duralex Lys Stackable mug will last -- and continue to look great -- through a lifetime of use. The crystal-clear tempered glass is astoundingly strong and shock resistant for hot-and-cold use, and the convenient stackable design saves space in your cupboard.

Extremely Durable - 2.5 times stronger than ordinary glass
Shock Resistant - Manufactured to withstand suddenly temperature extremes from -20°C to 100°C and is suitable for hot and cold liquids.
Safety - If broken by strong shock, Duralex shatters into small pieces, reducing risk of injury.
Hygenic - Nonporous Duralex glass does not absorb liquid.
Stackable - Duralex glasses are stackable for convenient and space saving storage.
Top Quality - Constant quality control guarantees excellence and built in durability insures that Duralex products will maintain their look for many years.
Microwave, Freezer and Dishwasher Safe - Adaptable modern glassware can go directly from the freezer to the microwave. Dishwasher Safe.