Boxer briefs

[citation needed] Boxer briefs are also called "trunks" in the United Kingdom and Australia.

[2] However, the style was available much earlier, as designed by Giorgio Armani and as worn by Richard Gere in the 1980 film American Gigolo.

Some boxer briefs have stitching on the rear to outline the buttocks and avoid a central seam.

[4] Some studies have suggested that tight underpants like boxer briefs and high temperature are not optimally conductive for sperm production.

A study in the October 1998 Journal of Urology, for example, concluded that underwear type is unlikely to have a significant effect on male fertility.