XINYOU XY-2830 Aquarium Bio-Sponge Filter, Black Bio-Sponge Filter; Material : Plastic, bio-sponge Model : XY-2830;Product Dimension : 9x 4.7x 14.7cm/3.54" x 1.85" x 5.79" (L*W*T) Sponge Dimension : 4.7 x 7.8cm/1.85" x 3.07" (D*H) Weight : 30.8g 1 x Bio-Sponge Filter