From sustainably managed forests the pure cellulose fibers of these filters will provide you with better filtration while respecting nature. they are also unbleached hence their beige color. so do not hesitate any longer and embark on a 100% vegetable experience!!! . mark . ocb. presentation . resealable bag of 150 filters. specificities . ocb eco slim filters x 1 bag: . . 150 filters approximately. unbleached filters. pure cellulose filter fibers. biodegradable filters: decompose in 28 days. recyclable bag printed with biodegradable inks. . dimensions. the filter: length x diameter (mm) 15 x 6 mm.