Save Costs - Regular replacement of the paper filter cartridge is part of daily pool maintenance, it will lead to increased costs and wastage. Our reusable and washable foam filters are a replacement ideal for disposable filter paper! You don't need to replace filter sponges frequently. Good Filtering Effect - Our Foam Filter Cartridge has a high density mesh structure which can filter a lot of impurities in the swimming pool, it can remove leaves, grass, hair, slag, pine, insects and other floating debris efficiently. High Quality - Our Swimming Pool Filter Foam is made of high quality sponge material, the thickness is sufficient, the density is moderate, soft, not easy to deform, environmentally friendly, washable, reused, durable, has a long life of life, perfect for filters type S1. Reusable & amp; Washable -Each Spa Foam Filter can be used for approximately 2 months. You can clean the filter sponges once a week to keep the water clean and reduce bacteria in the pool, our filter element is easy to clean and install. Application - Our Washable Foam Filter is suitable for Type S1 and most pool filters on the market, keep the pool, aquarium and spa clean. Good Filtering Effect Our Foam Filter Cartridge has a high density mesh structure which can filter a lot of impurities in the swimming pool, it can remove leaves, grass, hair, slag, pine, insects and other floating debris effectively.