Abstract: A retroreflective element (10) in the form of a micro- or nano-sized prism produced from bio-based and biodegradable plastic polymers, such as polylactic acid (PLA) or polyglycolic acid (PGA) is provided. A plurality of retroreflective elements (10) are utilized for manufacturing of a reflective composite material (100), which, in turn, may be utilized for manufacturing of a multiplicity of various products. Retroreflective fibrous products, like yarns, threads and textiles may thus be produced. The composite (100) and/or elements (10) may be blended to any appropriate material and being further processed by spraying, spreading, printing, casting, molding, pressing and the like.