Natural materials, high-grade filter paper; Size:7x10cm Ways of seal off: seal it off by string,Draw string closure Suitable for tea, spice and herbal powder These bags are used for filling with tea or dry herb or plants No using hot iron or electric iron Material: Non-Woven Fabrics Color:white No pollution to our circumstance. These bags are used for filling with 1-3 mixture of tea or dry herb or plants. High strength, good toughness and heat resistance. Non-toxic and safe to our body. As the small bag boil proof and the material is thin, effectively maintaining flavor to make the delicious broth. These teabags are manufactured to the highest quality. You do not need to heat them to seal, just pull the string and tie a small knot.Products from NIUNIU's store