“Most teabags are made from paper, with a small amount of plastic used to seal them shut. But some premium brands have switched to using greater amounts of plastic mesh for their product instead. This is usually so that the tea bag is held in a pyramid shape, which producers claim helps the tea leaves infuse better.” BBC: Microplastics: Premium teabags leak billions of particles. (I’m not sure how accurate this study is, but I wanted to use the headline and besides, I drink coffee…)