European standard woven style tea bag. Seal it off by string, it does not need a hot iron to seal. There is no pollution to our environment, also it is non-toxic and safe to our body. High strength, good toughness and heat resistance. Perfect for filling a mixture of tea or dry herb or plants, tea, coffee, spice and herbal powder. Put a variety of spices or herbs into the bag, tightly close the bag and then put it into a pot to cook stew. As the small bag boil proof and the material is thin, effectively maintaining the original flavor.