A [[holster]] for storing a [[weapon]] (usually a [[handgun]]) on one's [[back]].  When worn just above the waist, it is called a "small of back" or "SOB" holster, often used for concealed carrying.

h4. See also
* [[holster]]
** [[ankle holster]]
** [[arm holster]]
** [[crossdraw holster]]
** [[leg holster]]
*** [[thigh holster]]
** [[shoulder holster]]
** [[thigh holster]]

h4. External links
* "Wikipedia - Handgun holster":[https://en.wikipedia.org/wiki/Handgun_holster]
back holster