Sized to fit long-scaled violas with a body length of 16 to 16 ˝ inches and a playing length of 15 inches, D’Addario’s Pro-Arte Long viola strings are perfectly suited for serious students and amateur violists. Pro-Arte viola strings provide a noticeably darker, warmer and mellower tone than comparable strings. These viola strings feature a synthetic nylon core that breaks in quickly and produces the warm, dark tone. Although Pro-Arte are medium gauge, the strings are actually designed with a lower tension. The lower tension allows for more tonal blending and easier bow response. Although the Pro-Arte strings have a similar dark tone, comparable to gut strings, these nylon core strings are less sensitive to humidity and temperature changes, ensuring your strings produce a clear, consistent sound. Budget-friendly, the viola strings are manufactured in the United States, and the quality of the strings is held to D’Addario’s rigorous standards. To ensure your Pro-Arte Long viola strings are delivered in pristine condition, the strings are package in sealed, corrosion resistant packaging.