The Ridenour Thumb Saddle eliminates the "pinch" tension between the thumb and fingers by simply opening the hand up. The increased openness promotes the needed relaxation without throwing the thumb and fingers out of balance. The curved fingers promote a much more efficient finger motion and increased endurance due to the absence of tension. The Ridenour Thumb Saddle it the right hand solution that feels great, works great and looks great! You'll never play the clarinet again without it!