A briefcase is a narrow hard-sided box-shaped bag or case used mainly for carrying papers and equipped with a handle. Lawyers commonly use briefcases to carry briefs to present to a court, hence the name.[citation needed] Businesspeople and other white collar professionals also use briefcases to carry papers, and since the 1980s, electronic devices such as laptop computers and tablet computers. Some briefcases have only a main internal space, while others may have subsections, accordion sections, small pockets, or dividers. Briefcases may be made from leather, vinyl, durable fabric, thin metal (such as aluminium), or plastic. Leather, vinyl, or fabric briefcases may have externally-accessible pockets or sleeves in addition to the main storage space. Some briefcases made of fabric may have a shoulder strap. Briefcases typically have a lock to protect the contents. Nowadays, briefcases may have padded internal pouches to protect laptop computers.