From the product description, check product page for current description, price and availability:

• MATERIAL – The strainer is made of 300-micron mesh, super durable, won’t wrinkle or damage easily. Made of food-grade stainless steel, it is acid resistant, low temperature resistant, high temperature resistant, alkali resistant, rust resistant, corrision resistant, heat & pressure resistant.
• GOOD FILTERING PERFORMANCE – Compared with nylon and pure cotton materials, our strainer is more environmental friendly, more healthy, more durable and more easily to clean and eliminate. It is an awesome addition to your home brewing equipment.
• EASY TO CLEAN – Turn the filter upside down and spray the mesh strainer from the outside to rinse the remaining residue. Super easy and quick to clean it in the sink and simple to store for next reuse of homebrew strainer. It is recommended to clean it immediately after use.
• BROAD USE – The brewing filter can be used for filtering homebrew, beer, wine, homemade coffee, an awesome accessory for coffee grinder, filter pot, filter, water purifier etc, perfect to filter out impurities, making the beer and drinks taste better.