With stainless steel material, small and exquisite appearance, it is convenient to carry. retractable design, it is easy to use. remove top cover from the box, and then extend the cup to its full height with a key ring, occupies little space in your travel bag. clip it on your belt loop, backpack or jacket suitable for camping, hiking, mountaineering,travelling and other outdoor activities. colour: sliver material: stainless steel size: 75ml.