EASY TO STORAGE: They can be stacked up together and save your space, convenient to storage and carry around; the capacity of each cup is 500ml/16-ounce, enough use WIDE APPLICATION: Can be used as coffee cup, tea cup, espresso cup, wine cup, beer cup, beverage cup and more; suitable for both indoor and outdoor activities, such as birthday parties, home gathering, traveling, camping and so on MATERIAL: Food grade 304 stainless steel with internal and external polished, with no and inodorous, rustless and , prevent scratch and drop-proof, It can be used over and over again, it is a good substitute for glass and paper cups ECO-FRIENDLY: It can be used over and over again, it is a good substitute for glass and paper cups,You can to use,suitable size for adults or kids daily use