Coils and springs are bouncing around the current design trend Zeitgeist — or at least we've seen enough of them lately that we started a Pinterest board to keep track — but Korean designer Greem Jeong's take on them might be our favorite application yet. Her Mono series employs silicone tubes — typically an industrial material that's used to protect wires or pipes — that are here wrapped around a steel core form everything from table bases to a stiff bench, in colors that range from velvety blue to brilliant banana yellow.