Bo-Pep makes your flute much more comfortable to play. The Flute Finger Guide builds out the body of the flute at the most critical point making it easier to hold. It helps open the grip to reduce tension and improve balance. Bo-Pep products are easy to snap onto the flute and may be adjusted up or down to suit individual hands. No adhesives required. Comes in drawstring sack that can be tied to the case handle for easy storage.