Suitcases on wheels

 

— the simplest option is a pair of wheels located on one side of the bottom end of the suitcase; on the other side there are two small supports. Such products are simpler and cheaper than four-wheeled ones, and the wheels themselves are usually recessed into the body and take up a minimum of extra space. On the other hand, a two-wheeled suitcase is not so convenient to roll — for this you need to tilt the product and hold it by the handle. This can be quite a hassle, especially if your luggage is heavy and/or you need to move it frequently over short distances, such as in a queue.