IMPACT AND CHIP RESISTANT, EXTREMELY DURABLE|Duralex tempered glass is 2.5 times stronger than ordinary glass.|SHOCK RESISTANT|Duralex is manufactured to withstand sudden temperature extremes from -4F to 212F and is suitable for hot or cold liquids.|SAFETY|If broken by strong shock, Duralex shatters into small pieces, reducing the risk of injury.|HYGIENIC|Nonporous Duralex glass does not absorb liquid.|STACKABLE|The Duralex glasses and bowls 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.