Fabric Composition Matters: Our bags are made from TUV-certified, food-grade polyester. The fine polyester mesh not only filters well but also allows for adequate drainage. High-Efficiency Filtration: Some hairy fabrics absorb and retain grain tips, which cannot be cleaned properly. Our bags are very soft, and there are no loose fibers under the microscope. Choose our bags to filter all small particles for improved efficiency, clarity, and drainage performance. Safe to Boil: The polyester material in our brewing bag has a heat resistance of 248℉ and can withstand boiling, making it your ultimate preparation bag. Durable: We use durable polyester, which is strong, resistant to stretching and shrinking, and wear-resistant. Each seam is reinforced and is not easy to tear or break. The reinforced double seam can hold a lot of grain. Quick and Easy Cleaning: The fabric is free of loose fibers. Cleaning is very simple. It dries quickly when hanging because it does not absorb water. The seams are on the outside, and there are no particles trapped in the bag. Item Type: Brewing Bags Material: Polyester 1 x Brewing Bag