Strengths: 009/011/016/026/036/046 Coating: Optiweb Coating Set 19027 Optiweb Custom Light. Elixir heralds a new era in string technology. According to the manufacturer, the Optiweb strings offer a clear tone that is indistinguishable from traditional, uncoated strings for the first time. At the same time, guitarists will experience a more familiar, natural feel compared to the Nanoweb or Polyweb series. Of course, one can also expect the outstanding durability that Elixir strings are known and loved for from the Optiwebs.