Various mechanical closure systems and securing systems are disclosed, such as snowboard bindings and car rack systems. The systems include a mechanically reformable strap. The strap includes a wire disposed along a longitudinal axis of the strap. The wire maintains the strap in a desired geometry that is different from a previous geometry of the strap. In other embodiments, a wire-core strap can include transverse ridges, holes, or other types of grooves or apertures.