Features: Made of premium sponge, it is non-toxic, long-lasting, safe and durable to use. Its high filtration efficiency provides you a swimming pool with clean water. It can be easily washed and reused multiple times, enabling to reduce your costs. It has a long service time, reaching approximately 2 months. A perfect replacement for conventional filter element! And it is easy to replace. Specifications: Material: Sponge Quantity: 1PCS / 3PCS (Optional) Item Weight: 1PCS: 25g / 0.9oz 3PCS: 75g / 2.7oz Item Size(single): 20*10*10cm / 7.9*3.9*3.9in Package Weight: 1PCS: 29g / 1oz 3PCS: 87g / 3.1oz Package Size: 1PCS: 20*10*10cm / 7.9*3.9*3.9in 3PCS: 30*20*10cm / 11.8*7.9*3.9in Note: Filter foam only, other accessories are not included. Please replace the filter foam in time. Due to manual measurement, there may be deviation. Due to lighting, the item in picture and material object may slightly differ in color, please in kind prevail. Packing List: 8/6/3/1 * Filter Foam