Elixir strings are anything but ordinary strings! They have a unique Goretex coating, which gives them a 4 to 5 times longer life. Touch them, compare them and you'll see they really do sound out! Give extraordinary guitars extraordinary strings! Elixir was the first to produce coated strings. They are perfect: anti-corrosion, pleasant to touch, with a 4 to 5 times longer life and they make a wonderful sound!