Lockers are normally quite narrow, of varying heights and tier arrangements.
Width and depth usually conform to standard measurements, although non-standard sizes are occasionally found. Public places with lockers often contain large numbers of them, such as in a school. They are usually made of painted sheet metal.
They are usually equipped with a lock, or at least a facility for padlocking (occasionally both).
They are usually intended for use in public places, and intended for the short- or long-term private use of individuals for storing clothing or other personal items.
Users may rent a locker for a single use or for a period of time for repeated use.
Some lockers are offered as a free service to people partaking of certain activities that require the safekeeping of personal items.
There are usually, but not always, several of them joined together.