Made from premium nylon material, It doesn/'t included any chemicals or bleaching material, very safe and healthy to use. Easy and convenient to be put in or taken off from the tea cup with drawstring. It is heat- and rub , having properties of high performance, fine workmanship, practical and . Its opening is easy to sealed. You need to use nylon sealing machine(not included) to , the tea leaves, herbs or spices be blocked in the bag thus /'t scatter anywhere in your cup or soup pot. Great for holding tea leaves, all herbs, spices or in making home tea, stews, marinades, soups and casseroles etc. Condition: Colour: as shown Material: Nylon Size: 6x7cm Package Contents: 200 * Tea Infuser Bags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.