DescriptionZYEX synthetic core strings produce an extremely warm, rich sound. Zyex strings are made from a new generation of synthetic material, creating strings that are incredibly stable under drastic climatic conditions. Within a matter of hours, Zyex settles in on the instrument with a sound that is warmer than most other synthetic core strings. Zyex is also and excellent choice for use on bright sounding instruments.Sized to fit long-scale viola (body length 16 – 16.5 inches) with a playing length of 15 inches (38cm), these medium tension strings are optimized to the needs of a majority of players. Packaged in uniquely-designed sealed pouches providing unparalleled protection from the elements that cause corrosion.– Medium tension– Zyex synthetic core produces a rich, warm tone– Short break-in time and excellent bow response provides superb playability and a broad tonal palette– All D’Addario strings are designed, engineered and manufactured in the USA to the most stringent quality controls in the industry