When an upper-body garment (such as a [[shirt]] or a [[jacket]]) only has one sleeve. If the garment has two sleeves of different lengths, use [[uneven sleeves]]. Do not use this tag for singular gloves, bridal gauntlets, detached sleeves etc.

h4. See also:
* [[uneven sleeves]]
* [[mismatched sleeves]]
* [[single detached sleeve]]
* [[single glove]]
* [[single bridal gauntlet]]