One revolutionary step. Its time to go green. The ortega atmosphere nylon strings take a massive leap to protect our beloved planet. Coming all the way from the gorgeous land of italy these atmosphere strings replace the usual oil based treble strings with a newly developed plant based material. And for the first time ever you can play the environmentally friendly way. Without sacrificing that truly distinctive nylon string tone.like standard nylon strings these ortega atmosphere strings are superbly comfortable to play. And they truly set the music industry milestone for protecting the environment. Plus youll be thrilled to hear that during the manufacturing process ortegas carbon emission was reduced by 50% cleaner greener spectacular. This new material not only offers comfort and reliability but delivers a sweet sonic combo of brightness and warmth with a punchy attitude. You can also explore precise intonation with truly pleasing projection. Ready to take one step toward a better planet? Do it with ortega.