This shoe design is for the long-distance or overseas traveller. The three styles of this shoe are: first, as general leisure shoes. Secondly  while users are confined to their seats on a train or airplane their feet usually feel cold and can suffer from swelling due to lack of movement. When this happens users can take off the outer shell, and wear the inner layer. This layer will keep their feet warm and restrict bad odours coming from them making the traveller and other passengers feel comfortable. Thirdly, after a shower or to go to some relaxing places like the beach, users can wear them as sandals by removing the inner layer. The main purpose is accomodating many kinds of needs and situations, making travellers feel at ease with these shoes made for comfort and convenience.