FunLavie Aquarium Filter Media Bag Nylon Mesh Bag Net Bag Zipper Package contains: 5 fine mesh media filter bags + 5 high flow mesh filter bags. Size: Fine mesh bag 6.4 x 8.1 inch., high flow mesh bag 6 x 8 inch. Fine mesh bag great for use with granulated activated carbon, peat fiber, pellets, resins or any other aquarium filter media. High flow mesh bag is large enough for holding most media items, such as pellet carbon, bio balls, bio ceramic rings, zeolite, gravel and more. Multifunctional mesh bag, also can be used as LAUNDRY BAGS, STORAGE BAG. Zipper closure for reusable purpose. Prevent media from entering your filter system and make your pond clean. 30 DAYS MONEYBACK - If our product damaged when you recieve, we'll send you a new one at no cost. Carefully hand inspected to insure quality. We stand behind our products 100%. As hard as we try, sometimes mistakes happen. Simply contact us and we will make it right.