This track is made from a super-strong rubber material which gives the cleaner the ability to move around the bottom surface of your pool with ease. It also gives the cleaner the ability to climb up and down the pool walls covering more surface area for a neat and clean pool. When trying to troubleshoot an issue you are having with your cleaner not moving or grabbing the surface of the pool as well as before, you can always start by checking the cleaner's track. Inside the track are little teeth that will wear and deteriorate over time and the use of the cleaner is an indication that it may be time to replace these parts.