Made from premium nylon material, It doesn/'t included any toxic 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-resistant and rub resistant, 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 seal it, the tea leaves, herbs or spices will be blocked in the bag thus won/'t scatter anywhere in your cup or soup pot. Great for holding tea leaves, all herbs, spices or bouquet garni in making home tea, stews, marinades, soups and casseroles etc. Condition: Colour: Material: Nylon Size: 6x7cm Package Contents: 100 * Tea Infuser Bags Only the above package content, other products are not included. Note: Light shooting 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.