Item# RTMUSLN4X6 These all natural unbleached muslin tea bags are closed by a double knotted string at the very top of the bag. It stays securely closed without tying the strings. These tea bags can be used over and over. They are great for brewing large batches of tea. The cloth effectively filters out small particles giving a very nice professional quality brew. Great for making your own herbal teas. The tea bag can be filled with herbs and boiled for many hours or just steeped for a few minutes in hot water to produce some of the finest quality herbal teas you can make at home. Works with tea leaves, and coarsely ground herds of all kinds. The tea bag measure 4x6 inches.