The SG+ line is the result of a long period invested in research for the coating of steel strings for musical instruments.
SG+ strings have a nano-coating on all strings (bass and raws) that protects them from the natural oxidation that occurs with certain types of metal, in the case of strings, steel.
This coating provides a longer-lasting “feel” and a new-string tone than regular strings.
Stringing that, in addition to sensational sound projection, brings the true feeling of folk. With more prominent brightness characteristics, the 85/15 line brings the most balanced raw material (in terms of durability, comfort, and sound) among those used for acoustic instruments.