Description from Amazon USA :
Jam on and on (and on) with the same premium acoustic guitar strings that experienced players worldwide trust to keep their incredible tone longer than any other string available. Unlike other string brands, Elixir Strings coats the whole string. This protects not only the outer string surface but also the gaps between the windings where common tone-deadening gunk typically builds up in other brands coated and uncoated guitar strings. Anti-Rust Plating on plain steel strings ensures longer tone life for the entire set. Who wouldn t love more quality playing time between the hassle and cost of string changes Crafted to last, these resonator acoustic guitar strings constructed with 80/20 (80% copper, 20% zinc) bronze wrap wire boast a warm, robust tone that sounds played-in right out of the pack while still retaining a remarkably clear mid-range presence. The POLYWEB Coating brings a soft, slick, and fast feel to the playing experience. For a more traditionally textured, uncoated feel, try our ultra-thin NANOWEB Coating. The 80/20 Bronze Acoustic Guitar Strings with NANOWEB Coating, for example, might be a good fit, especially if you re also looking for a crisper, brighter, and more vibrant tone. For strings that strike a dynamic balance between full-bodied tone and sparkling high-end clarity, our Phosphor Bronze Acoustic Guitar Strings deliver exactly that alongside our NANOWEB Coating s more traditional feel. Of course, the kind of string you play is all a matter of personal preference. Not sure what tone or feel is right for you Try them out for yourself, and find your new favorite string from Elixir Strings. For a more in-depth look at what makes our strings so special, scroll to the branded info further down the page. Elixir Strings: Great tone. Long life.