Uxcell 2-Piece Fish Tank Reusable Bio Absorbent Sponge Filter Set, 32cm, Black/Blue Biochemical Filter Sponge; Material : Sponge Color : Black, Blue Size : 32 x 12 x 2cm/12.6" x 4.7" x 0.8" (L*W*T) Weight : 35g 2 x Biochemical Filter Sponges