Material: Made of nylon material, the fish tank DIY mesh screen net is sturdy and durable to apply, not easy to tear and fray, can be applied for a long time, reusable. Widely Use: You can use it as covering for fish tank, bird cage, hencoop, etc. To prevent fishes, birds, chickens from escaping, good helper for most people. Functional: The fish tank net designed in mesh holes can let the light come in without preventing it from getting into the fish tank and can prevent fishes from jumping out of the fish tank. Easy Store: A good fish tank net cover that does not take up much space when not in use. You can also decorate your fish tank. Easy Use: Easy to use, with elastic bands and adjustable buckle. Two sizes, suitable for most aquarium fish tank. Specification: Material: Nylon Color: White Size(LxW): L, XL L: About 50x36cm/19.68x14.17inch XL: About 70x40cm/27.56x15.75inch Package includes: 1pc x Aquarium Net