Polaris 3900 Sport SuperBag (39-310)
This bag was designed to store all the dirt, debris, and other forms of mulch that are sucked up off your pool's surface. It is made from a durable vinyl-like material that is not only strong but lightweight. Also, the net-like design of this material allows water to flow effortlessly through the bag so that way it doesn’t impede the cleaner in any way.
This part sits atop of the cleaner and is gray with navy blue trim that runs along its edge. There are also is to two plastic pieces that have prongs on opposite sides located on the bottom that allows the bag to be clipped and secured to the vacuum tube or top end of the cleaner. This allows for easy removal and disposal of its contents.
one great troubleshooting tip if the cleaner is not moving or cleaning up the debris efficiently like it was before, you may simply need to empty the contents in the bag because it may be full. If you have a salt system on your pool you may need to scrub and clean the bag as the filter system could be clogged with debris.