Special Tea 150 Count Woven Style Draw String Bag, X-Large/4.72" x 6.29"/120 x 160mm, White Seal it off by string. Does not need a hot iron to seal No pollution to our environment, non-toxic and safe to our body High strength, good toughness and heat resistance Used for filling a mixture of tea or dry herb or plants Suitable for holding tea, coffee, spice and herbal powder