Seachem THE BAG filter bag (5 inches x 10 inches). Is an innovative filter bag with a durable non-stitched seam. Unlike nylon or similar bag materials, The Bag is resistant to bleach, acid and caustics. It will not degrade over time and will easily last several years. It has 180 micron mesh and comes with a convenient resealable locking closure. The Bag is 130x250mm (5in.x10in.) which makes it easily adaptable to almost any kind of filter. It is ideal for all filtration products and has an exceptionally long life.