Check the listing for details. New Maytronics Dolphin Pool Skirt Rubber Strips Bottom Brush Scrubber Echo CC. Condition: New. Listed at 24.99 USD. If the skirts are wore out or have any problems on your robots, it will cause them not to be efficient they won’t perform properly like sticking to the wall and will not have the suction power that it would have with good skirts on it so inspect your skirts and make your robot more efficient by replacing them as they go bad. If you have any questions contact us you should visually look at your skirts if they only have three flaps on each skirt then it’s a Older skirt system if it’s got the wiper style skirt like what these look like with plastic strips then this is the correct skirt for your robotIf the skirts are wore out or have any problems on your robots, it will cause them not to be efficient they won’t perform properly like sticking to the wall and will not have the suction power that it would have with good skirts on it so inspect your skirts and make your robot more efficient by replacing them as they go bad. If you have any questions contact us you should visually look at your skirts if they only have three flaps on each skirt then it’s a Older skirt system if it’s got the wiper style skirt like what these look like with plastic strips then this is the correct skirt for your robot