Strength: S- The Forestone Premium cut is the evolution of the current Forestone Bb clarinet reed- Produced using modern production methods and sporting a profile designed for a complete range of professional uses- Synthetic reed from resin-bonded bamboo- High resilience and flexibility- Robust, clear and powerful sound- Perfectly balanced front and rear resulting in optimal sound, intonation, resonance and feel- Retains strength and resistance over a long period- Much longer lifespan than cane reeds- Moisture resistant against saliva, humidity and altitude