Reed Absorbs absorb moisture or saliva that collects at the bottom of the reed in your practice chanter. Can be used in practice chanters and pipes with polypenco stocks where moisture is a problem. Packs of 12 Absorbent disks per package. Most people will notice that on hemped part of the practice chanter, that there is usually a buildup of moisture after playing. This will help collect a large part of that moisture.