The dimensions of a Samsonite brand bag are listed under the "Description & Features" tab of each product information page on the company's website, Shop.Samsonite.com. The body dimensions listed for each bag describe the length, width and height of the storage area of the piece, while the overall dimensions are the size of the bag including the wheels and handle.
Knowing the exact dimensions of a bag is especially important to airline passengers as each carrier has limitations on the acceptable size of a piece of luggage. The Samsonite website contains a graph of airline baggage allowances for most major air carriers. As of October 2015, American Airlines, Delta Airlines, JetBlue Airlines, US Airways and United Airlines limit carry-on luggage to 22 inches long, 14 inches wide and 9 inches high. Most airlines limit checked baggage to 56 inches long, 36 inches wide and 23 inches high. These measurements include anything protruding from the bag such as wheels and handles.
At airports, many airlines provide baggage sizers, small metal cages that replicate the maximum size of a piece of carry-on luggage allowed by the airline. Travelers are encouraged to use the sizer to test the size of their luggage before boarding to ensure bags meet the carrier's guidelines.