Suitcase

A suitcase is a somewhat flat rectangular-shaped bag with rounded corners, either hard plastic or soft or made of cloth, vinyl or leather that more or less keeps its shape. It has a carrying handle on one side and is used mainly for transporting clothes and other possessions during trips. It opens on hinges like a door. Suitcases lock with keys or a combination. Originally, suitcases were made of wool or linen. Most modern suitcases have built-in small wheels enabling them to be pulled along on hard flat surfaces by a fixed or extendable handle or by a retractable or stowable leash. Suitcases are a type of luggage. A smaller, firmer suitcase, used mainly for transporting papers and office supplies is known as a briefcase.

Backpacks in general fall into one of three categories: frameless, external frame, and internal frame. A pack frame, when present, serves to support the pack and distribute the weight of its contents across the body more easily (generally by transferring much of the weight to the hips and legs), so most of the weight does not rest on the shoulders, restricting range of motion and possibly causing damage from pressure on the straps. Most are capable of being closed with either a buckle mechanism or a zipper, though a few models use a drawstring fitted with a cord lock for the main compartment. Many Backpacks with shoulder straps can affect a humans posture if carrying more than 30 pounds.

A briefcase is a narrow box-shaped bag or case used mainly for carrying papers and other documents and equipped with a handle. Lawyers commonly use briefcases to carry briefs to present to a court, hence the name. Businesspeople and other professionals also use briefcases to carry important papers and, today, laptop computers. Briefcases are descendants of the limp satchel used in the fourteenth century for carrying money and valuables. It was called a "budget", derived from the Latin word "bulga" or Irish word "bolg", both meaning leather bag, and also the source of the financial term "budget".

A portfolio is a handleless case for carrying in the hand or under the arm. The name refers to the dry dock port officials of the 1950's in Boston Harbour, who would carry this style of case to contain all of the important dry dock information needed at the time. With all the information at hand, they were able to quickly access information on any ship in the dry dock. This trend quickly expanded to other drydocks across the east coast. A folio case is a portfolio with a retractable handle. An attaché case is a box-style case made of leather (occasionally aluminium), stretched over a hinged frame that opens into two compartments. It was traditionally carried by an attaché, a diplomatic officer attached to an embassy or consulate officially assigned to serve in a particular capacity.