... flask gift set,1pc thermos flask&4pcs coffee mugs.You can use it when hiking,fishing,climbing,picnic and other events. 1.The thermos flask gift set ... ,contains 1pc thermos flask and 4pcs coffee mugs.2.The thermos flask is made of double wall ... structure allows you to insert ice-cube in the flask. It is vacuum designed for keeping your drink hot/cold for 24 ...