Polaris filters are expensive and not easy to empy . The filters with the velcro after awhile become difficult to close. Usually pool owners relace them. I have had a Polaris for years. I also have a huge collection of old knee-high panty hose. Although knee-highs are not very large, they filter even small particles and they are throw-away. You may need to help them with a rubber band. From a long time Polaris user, knee-high panty hose are cheap, many women are like me and have a huge collection of old ones and it's blessing to just throw them away.