[-Friendly Material] The UV tea bags are made of wood pulp paper, sealed by heat press, no glue, odorless, biodegradable & compostable. [ Permeability] No tea leaf particulates floating out through the bag while allowing the tea to steep perfectly. [Sturdy to ] The tea bags wouldn't fall apart, when be used to brew coffee or tea in oven or in pressure cooker. [Mess-Free] No need to clean up, and make brewing much easier, a metal infuser. [Multiple Usages] The tea bags are often used for bath soaks, soup spices, foot-bath, desiccant storage, ball storage and so on. Can also be used to fill carbon to keep the water in the tank clean. size:7 x 5cm Material:paper colour:brown Package Contents: 500 x tea bag Only the above package content, other products are not included. Note: Light 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.