Features: 1. EFFICIENT FILTRATION: Contains extra pleats to achieve good filtration efficiency, providing a sparkling clean pool. 2. HEAVY-DUTY FILTER PAPER: Superfine and heavy-duty filter paper can capture and absorb fine dirt and sand. 3. REPLACE ONLY EVERY 2 WEEKS: Each ink cartridge only needs to be replaced every 2 weeks, allowing you more time to enjoy the pool. 4. SPARKLING CLEAN POOL: Replace the filter element of the pool, let yourself rest and relax in the sparkling clean pool. 5. QUALITY MATERIAL: Made of high quality material, durable and practical to use. The cartridge filter is to keep your water clean and fresh. Prevents dirt from entering the pump and heater and prolongs service life. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: PET+non-woven fabric Size: As the picture shown Battery: No Color/Style: As the picture shown includes: choice 1: 1 x Filter Cartridge choice 2: 1 set of Filter Balls