This is a large capacity vacuum cup. It is made of two layers of 304 stainless steel inside and outside.It is safe, non-toxic, environment-friendly, and odor-free. It is resistant to fall, wear, and corrosion. The handle of the cup can be folded, which takes up no space for storage. It is light, portable, and can be easily placed on backpacks, boxes, and schoolbags. Suitable for outdoor activities, camping, and tourism. Can be used as a regular water cup, coffee cup, and beer cup.Measuring 3 1/8″Hx 3 .3″Diam.Quantity more than 1000, the price will be by sea.