Trouser assemblies with zippers

A trouser in combination with underpants, wherein the trouser comprises:

• a front trouser side and rear trouser side;
• a circumferential waistband having an upper edge, a lower edge, a rear portion, and a front portion that includes a first end section that includes an outer surface having an outwardly facing female clasp portion and a second end section that includes a waistband flap with an inner surface having an inwardly facing male clasp portion, wherein the male clasp portion is configured to be inserted into the female clasp portion in order to secure the waistband in a closed position;
• a first trouser leg with a first zipper tape extending from a front portion of the first trouser leg to the rear portion of the waistband;
• a second trouser leg with a second zipper tape extending from a front portion of the second trouser leg to the rear portion of the waistband, wherein the first and second zipper tapes are capable of being zipped from an open position to a closed position and from a closed position to an open position;
• and
• a zipper pull that is capable of:
• (a) a first configuration in which the first zipper tape is coupled to the second zipper tape when the zipper pull is in the first location at the lower end of the front portion of the waistband such that the zipper is in a closed position;
• and
• (b) a second configuration in which the first zipper tape is uncoupled from the second zipper tape when the zipper pull is in the second location at the lower end of the rear portion of the waistband such that the zipper is in an open position;
• a first rear trouser coupling means coupled to the first trouser leg;
• a first front trouser coupling means coupled to the first trouser leg;
• a second rear trouser coupling means coupled to the second trouser leg;
• a second front trouser coupling means coupled to the second trouser leg;
• and
• the underpants comprises:
• a rear underpants portion with a rear underpants coupling means coupled to the first front coupling means or the second front coupling means, or both;
• a front underpants portion;
• and
• a flap with a flap coupling means that (a) when in a closed position is coupled to either the first front trouser coupling means or the second front trouser coupling means, or both, and (b) when in an open position is coupled to the rear trouser portion.