Packed with technology and incredibly comfortable, Tri Factor is a best seller for a reason. The Bellatrix version has dazzling details, like metallic piping, zippered pockets, and elevated logos, for standout style in and out of the show ring. Tri Factor X Bellatrix Full Seat Breech Women's Tri Factor X Bellatrix Full Seat Breech in White NylonSpandex, Size: 28 Regular by Ariat