Highland Reeds Bottle Trap is a moisture system that connects to the blow pipe stock. It is absolutely vital you should have something going from the bottom of the blow stock to the back of the bag. It’s a must. The Bottle Trap is an inexpensive and very effective moisture control product for use with a zipper pipe bag.
Air passes along the length of the tubing and into the bottle which has a moisture absorbing cloth. Air holes in the bottle allow dry air to pass into the pipe bag. Remove the cloth from the bottle and allow it to dry out after playing and you can easily re-insert the cloth into the bottle once dry.
Replacement bottles and cloths are available.