JoyJolt Caleo Coffee Glasses

Yes, they are microwave safe. The borosilicate glass is designed to withstand temperature changes, so you can safely reheat your coffee or tea directly in the glass.

The double-wall construction acts as an insulator, which helps maintain your beverage's temperature significantly longer than a standard single-wall ceramic mug. While it won't keep a drink steaming hot for hours like a vacuum-insulated travel tumbler, it is highly effective for a standard coffee break.

No, the exterior remains cool to the touch even when filled with piping hot coffee. The air pocket between the two layers of glass provides an effective thermal barrier, allowing you to hold the cup comfortably without a handle.

These glasses are dishwasher safe. However, to keep the glass looking pristine and avoid potential chipping from other dishes, we recommend placing them on the top rack.

Because of the double-wall design, the exterior glass stays at room temperature, which prevents the condensation that typically causes rings on your furniture. You can use them on wood or glass surfaces without needing a coaster.