Knitted mesh material Made of tear-resistant knitted mesh, this water pump filter bag protects your pond pump from debris and helps reduce maintenance needs. Efficient pump barrier Designed to prevent debris, leaves, worms and other small objects from clogging the pump, this filter bag lowers the frequency of strainer cleaning and saves you time. Two sizes available Choose from two sizes to fit most submersible pumps, ensuring a snug fit and effective filtration. Easy to secure and tighten Equipped with drawcords and buckles for easy, secure attachment. Tighten the bag to provide enhanced protection for your pump. Use scenarios - Garden pond with a fountain pump: prevents leaves and debris from entering the pump during seasonal changes. - Koi or fish ponds: reduces debris and worm intrusion to keep the pump running smoothly. - Seasonal maintenance or outdoor ponds: simplifies cleaning by cutting down debris reaching the pump and strainer.