This is a re-design of the original Piper's Pal chanter cap. This version features an indicator on top of the reed protector to show when it needs to be recharged.
This product works on the same basic as the original Piper's Pal. You will add small amounts of water over time to keep the humidity level up, and the Piper's Pal Recharge Kits will keep the granules fresh annually.