Brew in a Bag saves both and time and money versus traditional mash tuns when all-grain brewing;These bags are made of durable polyester and can be washed and reused;26 wide and 22 tall to ensure you can brew even the larges of recipes;These bag will fit kettles up to 17 in diameter and will hold up to 20lbs of grain;Prefer disposable? Search B01CRKWD8M on Amazon