This large muslin bag measures 1' x 3' and is perfect for steeping larger quantities of grains. This bag is best used when seeping more than 1 lb of grains. In our crazy beer-fueled bench tests, we've steeped up to 4.5 lbs of grain in this bag. Don't ask us what happened when we went to 4.6 lbs. Don't go there, man! Save yourself!