These insulated glass mugs help keep beverages at their optimum temperature longer while preventing condensation from forming. Each piece glass is made of heat-resistant borosilicate glass which is non-toxic, odourless and safe to use. The mugs are suitable for use in a microwave and freezer. A rounded handle makes the cup more comfortable and easier to grip, reducing the pressure from the weight of the mug. The mugs can be used to serve tea, hot chocolate, coffee and other beverages. The product images have props used for illustrative purposes. This item is not eligible for returns, exchanges, or refunds except for manufacturing defects.