Durable for use:
Nylon mesh bag with metal zipper on the top, washable and reusable, can serve a long time.

Small mesh hole:
Holes diameter: 2 mm/ 0.08 inch. Media that smaller than 2 mm will escape from the bag. So it is not suitable for use with smaller particle media, such as purigen, phosguard, gel mix, activated carbon, etc.

Usage:
This mesh bag is good for holding large media items, great for use in canister filter system and fit for use in freshwater tank.

Specification:
Material: nylon, plastic
Color: black
Size(WL): about 15 x 20 cm/ 5.9 x 7.8 inch
Hole diameter: 2 mm/ 0.08 inch

Package includes:
5 x Aquarium filter media bag

• Quantity: 5 pack aquarium filter bags; Material: made of nylon material with plastic zipper for durable and reusable; Color: black
• Fish tank filter bags size: 15 cm/ 5.9 inch x 20 cm/ 7.8 inch(WL), big enough for holding most media items, such as pellet carbon, bio balls, bio ceramic rings, zeolite, gravel and more
• Mesh holes diameter: 2 mm/ 0.08 inch; So the bag is not fit for holding any particles less than 2 mm/ 0.08 inch, or they will pass through the bag
• Application: the filter media bag suitable for use in a variety of filters including canister filters, power filters, wet/ dry filters and pond filters for your tanks, good for use in freshwater tank
• Easy to use: the fish tank mesh bags are easy to fill and empty with zipper design to keep filter media secure; Note: it's not suitable for fine, granulated charcoal media and smaller particle media