A strap mask or face cage is a cross between a hood and a head harness. Instead of using solid leather panels, the body of the hood is constructed of a lattice-work of straps. Unlike a head harness, which will typically use no more than half a dozen straps, a strap mask might use up to 20 or more criss-crossing the face. Most designs use rivets to join the straps together. Although strap masks are usually worn by the submissive partner, the visual effect is more Mad Max than BDSM.