Perfect Capacity for Multiple Use: 12 ounces can be suitable for your most daily use and also is large enough to go with espresso machines or coffee makers. Clear glass wall can make your eyes enjoy good coffee with your month. It perfectly serves for espresso, tea, coffee, latte, mocha, Americano, cappuccino, beverages and ice coffee.
Double Wall Insulated Design: Advanced double wall insulated design can keep drinks hot or cold and keep your hands safe. You can hold Growom double walled glass espresso cup right away after pouring hot or cold drinks. Double wall insulation technology left a small sealed round hole on the bottom of each cup. Because it can prevent Growom glass cup burst when using and it allows the glass cup to breathe in process. So, it is not flawed or defective.
Freezer & Dishwasher Safe: IMPORTANTLY, Growom double wall insulated coffee mug is not microwave safe and oven safe but it is freezer safe and dishwasher safe (Don’t put the mug in the dishwasher too long time). Because the gap between two glass walls is air rather than vacuum. If the mug is vacuum mug, it will make a loud noise when it is broken, and it will blow up the glass fragments, which will hurt people easily.
338 Degrees Fahrenheit: Growom double wall coffee mug was made of high-quality and durable Borosilicate glass and has newest double wall insulated design. It can sustain the temperature difference of 338 degrees Fahrenheit in a moment. This means if you pour boiled water which would be 212 degrees Fahrenheit into Growom double wall coffee mug filled with ice, the mug is still working and you also can hold the mug without waiting. But you need to care for the splashed boiled water.
30 Days Unconditional Return Policy: We cannot promise that each Growom glass coffee mug would not damage in transit although we use the best shipping service - Amazon shipping. But we can provide the best after-sale customer service for you. If the mug is unfortunately damaged within 30 days, we definitely promise a full refund to you. If you have any questions of our products, please contacting with us by Amazon email and we will provide the best solutions for you ASAP.