Made of high quality food grade silicone, healthy and durable. ^ GOOD PERFORMANCE: Our tea bags are custom-designed for loose leaf tea; the tea leaf particles wont escape out and into your tea. They also wont release other flavor but the alluring small of tea.^ EXCELLENT DESIGNED: Just 3 parts, the transparent body help you to see your tea leaf weight more clearly; the rope will fix your tea bag at the edge of the cup and easy to remove; and the bottom cover is easy to open or close for putting in or pouring out your tea leaf.^ EASY TO CLEAN: After discard the used leaves, just rinse with warm soapy water or throw it in your dishwasher; no spot will be left on the surface.^ 5 COLORS FOR MORE PEOPLE: 5 different bright colors can meet your family or friends different preferences, and its easy to distinguish, avoid mistaking. More healthy and convenient.