Tea Bags 100pcs/lot 5.5 X 7cm Empty Tea Bags with String Heal Seal Filter Paper for Herb Loose Tea. Ways of seal off: seal it off by string. No using hot iron or electric iron. These bags are used for filling with 3 ~ 8g mixture of tea or dry herb or plants. Suitable for tea, spice and herbal powder. Material: Non-Woven Fabrics