Material: Made of eco-friendly natural wheat straw, starch and food grade PP material. Green and healthy, can be biodegradable without toxic substances.Size: 200ml, lightweight and durable.Bamboo shape design, non-slip and unique. Non-slip bottom is safe to use. The wide mouth design can be easy to clean and antibacterial and anti-dust. At the bottom, increase the anti-slip and anti-scald angle.Their sturdy construction ensures they can survive accidental bumps or falls, especially when compared to typical ceramic containers. This makes them ideal for entertaining, whether indoors or outdoors.The mug can be stacked and stored to save space, they are BPA-free and dishwasher, microwave, refrigerator and freezer safe. Note: When you put water in the cup, you can smell the wheat flavor, but don't worry, it's healthy and no harm to the body.