It can be hung on the bag connecting the hand rope and the portable hook.It is convenient to read the measured dimension on the inside of the cup.Easier to hold and drink from the stainless steel edge of the cup After folding,the cup can fit your pocket,wallet and suitcase well without occupying space.It is very suitable for outdoor hiking and camping. You can hang it on the bag connecting the hand rope and the portable hook The cup is made of food grade silica gel, which does not absorb taste or smell.It is environmentally friendly and reusable. They are all equipped with lids, which can tightly isolate the pollutants in the cup.