Boxer briefs

Boxer Briefs: In the 1990s, retailers started selling boxer briefs, which take the longer shape of boxers but maintain the tightness of briefs.

Though marketed as a new design, these are actually quite similar to the bottom half of the two-part union suits worn in the 1910s. Boxer style are at or near true waist, leg sections extending to thighs) . They can be woven boxers (traditional) or knit boxers (like traditional but with more fabric give) .

Boxer briefs ere also knit and more form-fitting . Pouch boxer briefs have a pouch for genitals rather than access flap and athletic and bike-style boxers are generally skin-tight, usually with no access pouch or flap, like short tights.

from maletribe.com