Polyester-core synthetic strings. Aricore strings are dark in tone color and extremely stable/impervious to temperature/humidity changes. Alternate Chrome-Wound A and D strings, as well as Eudoxa-Aricore A string, available on
Individual Strings page. Chrome-wound strings are brighter in tone and less sensitive to perspiration than aluminum or silver. The Eudoxa-Aricore A has a darker tone quality than the regular Aricore A string.