The BiggDesign double-walled cup will reflect the elegance in your kitchen, with its creative design. It is perfect for keeping for the heat of all your hot and cold drinks, such as coffee, tea, milk and juice through its double insulated walls. The heat-proof cup provides easy holding. The double-walled cup can withstand temperatures of up to 150℃. It should not be directly in contact with high heat. It is not suitable for using such in microwave oven, cooker, stove etc. You can prefer the cup as an elegant gift option your for loved ones to remind you by keeping the cup at their hand. It has an the ideal capacity of 350 ml. It offers a more elegance look than any other glass in your kitchen with its transparent design. We recommend hand wash with warm water, it is not suitable for dishwashers. It is made of entirelyf lead-free, non-toxic ultra-clear glass, it is tasteless and odorless. Avoid using metal spoons as a precaution against scratches or cracks. It does not leak because it provides internal and external pressure balance.