The cute tea infuser made of 100% food-grade high boric acid glass material, non-toxic, lead-free. The cork cap is made of oak. Heat-resistant, cold-resistant, explosion-proof, healthy. Our glass tea strainer is used for brewing loose tea with simple tube design, easy to clean, reusable, very small and light, easy to carry when travel outdoors. Can be used to other herbal tea, flower tea Tea strainer for loose tea with simple attractive test tube design, non-toxic, no-rust, evenly carved and leaked, good filterability, easy to open and close, convenient glass tube tea infuser Remove the cork, put in proper tea you like, pour water to cup and last the tube infuser, the loose tea will sink at the bottom of the tube defuser and will not leak out.