100% brand new and high quality! Made of high quality sponge material, excellent filtation and durable. This sponge is bio cotton suitable for Sunsun Filter HW-603B and for HW-602. When the filter cotton gets dirty, can be washed with clean water or changed into new one. Specifications: Item type: Filter Sponge Material: Sponge Color: black, yellow and blue. Types:For HW-602B,For HW-603B. Size: For HW-602B Sponge: 10.5*3.5cm For HW-603B Sponge: 13*4cm Package includes: 3pcs* Filter Sponges Notes: Transition: 1cm=10mm=0.39inch 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.