This filter pad is well made of premium material for durable and practical use. It has a good effect on filtering the leftover. And its strong filterability can stable water quality, remove small and large debris particles and decompose some ammonia nitrogen debris particles. Feature - Color: White. - Material: Cotton. - Size: About 100x12x2cm. - Made of super dense thickened cotton with good water absorption and high permeability, filtering and decomposing dirt. - Strong filterability. It can be used repeatedly after cleaning. - Strong cotton and feel, can be repeated washing rather goes badly, durable to use. - Can be cut any size as your needed by yourself. - Suitable for sea water tank, fresh water tank, aqua-plant tank. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you