A wheeled or non-wheeled luggage, as well as soft or hard side luggage. Train case - A smaller, box-like, handled case for personal grooming articles. Garment bag - A style of luggage that folds over on itself to allow long garments such as suits or dresses to be packed flat to avoid creasing. Garment bags come in both wheeled and non-wheeled models and are usually one of the largest pieces in any set of luggage Tote - A small bag, usually worn on the shoulder Duffle bag - A barrel-shaped bag, almost exclusively soft side, is well suited to casual travel, with little organization inside. Carpet bag - Travel luggage traditionally made from carpets. Packing cubes - Small rectangular bags of different sizes and different colors created to keep the contents of other baggage organized and compact Gate check bags - Bags specially designed to protect frequent gate checking items, such as strollers and car seats. Features Locks - locks serve multiple purposes; a deterrent to dishonest airport workers and locks also help keep baggage closed during handling. Since 2003 most locks integrated into luggage use the TSA Lock standard developed by Travel Sentry to allow opening by the US Transportation Security Administration. Expandable luggage - suitcases that can be unzipped to expand for more packing space. Wheels Luggage carriers – light-weight wheeled carts on which luggage could be temporarily placed or that can be temporarily attached to luggage – date at least to the 1930s, such as in US patent 2,132,316 "Luggage carrier" by Anne W. Newton (filed 1937, published 1938). These were refined over the following decades, as reflected in patents such as a 1948 US patent by Herbert Ernest Mingo, for a "device for the handling of trunks, suitcases, and the like". A US patent for a "luggage carriage" filed in 1949 (and published 1953), and another for a "luggage carriage harness", were both made by Kent R. Costikyan. However, the wheels were external to the suitcases. Patents had been published for wheeled luggage – a wheeled trunk in 1887, and a wheeled suitcase in 1945 – but these were not successfully commercialized. Bernard D. Sadow invented the first commercial rolling suitcase. Sadow first applied for the rolling luggage patent, which was officially known as; United States patent 3,653,474 for “Rolling Luggage”, in 1970. Two years later in 1972 Bernard D. Sadow was given the wheeled suitcases