Material: This cup is made of organic wheat straw fiber, odorless, fine workmanship, smooth burr free, durable. Dishwasher safe: The cups are easy to clean and can be put in the dishwasher. They also work well in the microwave and don't get too hot. Multi-function: The cup can hold water, tea, coffee, soda and so on. It can also be a mouthwash cup or toothbrush holder, not only for kitchen and everyday use, but also for camping, motorhomes and outdoor activities. Stackable: The cups can be stacked to save space in the kitchen and keep the kitchen clean. Date First Available July 23, 2024