Abstract: A material retainer strip for holding gravel in a roadway, lining a flower bed or garden plot and generally maintaining the integrity of two separate surface materials, comprising elongated, flexible resilient strips of material having a substantially C-shaped cross-section, the base lip thereof being wider than the top lip, the base lip being secured to a surface by stakes. Included are a plurality of splice joints of various shapes for connecting the ends of the strips either in alignment or to permit execution of an abrupt turn in direction.