Duralex Lys Mug

Yes, they are designed to withstand thermal shock. They are rated for temperatures up to 212°F, making them perfectly safe for boiling water and hot beverages.

While glass conducts heat, the tempered glass used by Duralex is slightly thicker than standard glass, which helps insulate the contents. However, if you are pouring boiling water, the exterior will be warm to the touch, so you may want to hold them by the top rim or let the drink cool for a moment.

Yes, the tempered glass construction is specifically engineered to handle rapid temperature changes without cracking or shattering. You can safely transfer them from a freezer environment directly into a microwave.

The mugs are designed with a specific taper that allows them to nest securely inside one another. This stackable feature is highly effective for saving vertical space in crowded cupboards.

Duralex tempered glass is designed to be impact-resistant and significantly stronger than ordinary glass. If it does break, it is engineered to shatter into small, blunt chunks rather than dangerous, jagged shards.

Yes, they are completely dishwasher safe. Because the material is nonporous, they won't absorb food odors or stains, and they will retain their clarity even after repeated wash cycles.