The material used in our teabags is Certified Food Grade nylon mesh, made of PLA non-woven material which has a high heat resistance and makes it safe to steep your teas in these teabags. The material is FDA-approved and is both sustainable and compostable. We avoid staples and food-grade glue and instead use sonication, which is the process of applying ultrasonic frequency, to attach the tag with teabags.We ensure to seal them with heat to minimize any interference with the flavors. Moreover, nylon tea bags are used primarily because they offer superior flavor relative to traditional paper teabags which are usually bleached and lead to water pollution, and are harmful to our health.