D’Addario EXP45 classical or flamenco guitar string set Medium tension.

An ultra-thin layer of EXP covers the silver-plated copper wire, which is wound onto a multi-strand core. The result is a barrier against corrosion and weathering that prolongs the life of the strings and their sound. EXP strings have a very natural feel and a crisp, bright sound with a new-string tone that lasts three to four times longer than traditional guitar strings.