A snowboard boot (200) includes an upper boot (204) secured to an outsole (206). The boot upper includes a vamp opening (208) that is closed by a tongue (210) and a selectively securable vamp fastener (216). The tongue (210) carries a pocket (218) on a lower end (212) thereof, and first and second snap fasteners (222) on an upper end (214) thereof. A semi-rigid tongue stiffener (202) can be selectively secured to an anterior side of the tongue (210) utilizing the pocket and snap fasteners to selectively increase the stiffness of the boot and resistance to forward flexure by a predetermined degree.