The buckle folds expands and contracts the cup, Inside the cup lid may put a sugar, The cup body by column link cup body 2, 3, 4 coverall combinations becomes a successively, The festival and the festival asked the round collar cup body through the thread and the spacing, stops leaks the seal files connection, This ring biggest merit is bigger than, Not water leakage, Use security, The coverall combination loosens the separation fast easy, Is advantageous for the travel carry home.