Perfect if you fancy a quick tipple while youre on the move, this little stainless steel cup folds down, telescope-style, into a case on a key ring! An ideal accompaniment to a hip flask, the fold away cup makes it much more convenient to enjoy a tot of warming brandy or whiskey while youre out and about in chilly weather. Great for in your backpack, glove box, tackle box, boat, etc.Volume: 75 ml (approx).Base diameter: 50mm;cap height:13mm; retractable range:13mm.Not only It is fun, but extremely practical, this Folding Water Cup is a must for the busy traveler.It helps you take medication and drink anywhere.Remove top cover from the box, and then extend the cup to its full height.Clip it on your belt loop, backpack or jacket.Comes with a lobster clip for easy carry.