brand new and high quality Features: This replacement filter bags for aquarium battery-powered gravel cleaner. The filter bag can be re-used by washing it under tap water. It should be replaced after it worn out. 1. for Nano technology treatment, ultra-fine wool fiber knitwear, no deformation, tear not bad. 2. Exquisite selvage, no shedding, selvage is a must for cutting, high density and super adsorption culture filtration, good water permeability. 3. Based on the filtration principle of artificial turf, the dirt is trapped in the grass roots for digestion and decomposition, without chemical additives, and the water quality is not affected in a neutral way. Usage: 1. Soak in boiling water for 15 minutes before using. 2. filter bag plush in the inner stretch to receive the mouth can be. 3. It can be cleaned by washing machine, high-pressure rinse and faucet directly. After washing, it can be reused. Specification: Material: Nylon Color: As pictures shown Size: One Size Length: 20cm(7.87in) Width: 10cm(3.94in) Quantity: 1pc(other accessories demo in the picture are not included!) Note:1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes(without retail package): 1pcx Filter Bag