Abstract: A uniform trouser garment for use in martial arts such as Karate has a generally triangular symmetrical front flap with an interior pocket for holding in position a groin protective cup; an apex of the front flap is hinged by a non-metallic attachment at a mid-crotch location, adjacent which a strap additionally secures the groin protector, and covers a similarly-shaped but smaller opening located in the front of the garment below a waistband portion; for quick-detach but multiply secure fastening in the up or wear position the front flap has along the inner periphery upward margins strips of "Velcro" material for interlocking in overlapping relation with matching-location strips of material along the margins of the opening, and has across the top or base of the triangular shape on the inner side of the front flap a transverse strip of "Velcro" material which mates with a similar type strip along the inner face of waistband portion when the front flap, which extends above the waistband portion, is folded rear