US Patent 10945468 Trouser assemblies with zippers

Disclosed herein are trouser assemblies including a trouser assembly that may include: a trouser that may include: a trouser waistband having an internal waistband surface; a right leg portion coupled to the trouser waistband and having a right leg internal surface; a left leg portion coupled to the trouser waistband and the right leg portion and having a left leg internal surface; a rear trouser button coupled to the left leg portion, the right leg portion, or the trouser waistband, wherein the rear trouser button may be configured for removable coupling to a rear portion of underpants; and a front trouser button coupled to the left leg internal surface, the right leg internal surface, or the internal waistband surface, wherein the front trouser button may be configured for removable coupling to a front portion of the underpants.