Thermos flasks or Vacuum Flasks are ideal for travelers. If you go hiking, then with a thermos you will be able to get hot or cold water any time you like. You will not have to carry any bags of ice with you so that you will be able to drink water after the ice melts. It will, in fact, be hazardous for your health. If you simply fill your thermos with cold water, then it will stay cold for several hours and you will be able to refresh yourself whenever you like.
What if…You get tired and need some tea? There is no need to carry tea bags, milk and sugar with you and then worry about creating a fire to make some tea, because you can carry hot tea in your vacuum flask and it will stay hot for many hours.
Even if you are driving and don’t want to stop until you have driven for 3 or 4 hours, then you can certainly take advantage of vacuum flasks and enjoy hot coffee or cold water all along.
So…No matter how long your commute is or where you are going, if you want to keep your beverages hot or cold, then vacuum flasks are ideal for you.