Thanks to the long cutout, the Organic Reserve reeds offer dynamic flexibility and exceptional warm sound quality. These filed reeds feature a traditional tip that allows for easy articulation and response. D'Addario has developed the first precise digital system for measuring and cutting the incredibly complex geometric patterns that allow simple reeds to be produced in a whole new quality. Reserve reeds are held to very strict tolerances, so they reliably deliver the same quality time after time. Ideal for advanced students and professional musicians looking for a clear, consistent sound. The strong back provides control, flexible volume and exceptional sound quality. D'Addario Organic reeds are the first certified organic reeds on the market: giving players peace of mind that they are doing what's best for your health and the environment.