Abstract: A trouser with longitudinal evaporative cooling inseam panel is disclosed. The invention is comprised of a pair of form-fitting jeans having a permeable, textile panel strip running along the entire said inseam—from a user's ankle to a user's crotch and back down again to the distal ankle. An objective of the invention is to provide a thermal vent allowing for a plurality of personal hygiene improvements, including but not limited to, enhanced evaporative cooling of the skin during hot conditions; enhanced cooling of the thigh and calf muscles; minimizing friction and chafing of the upper thighs; and allowing for air exchange within the groin region leading to an overall improvement in comfort.