WOMUL Silicone Tea Infuser Mug Herbal Filter Diffusers Loose Leaf Strainer The infuser is constructed from silicone, which is soft, food-safe and tasteless, so it won't affect the taste of your tea. Materials: Food-safe silicone No taste, no color, and no smell to your cup of tea. Stainless steel "air tank" serves as a counterweight Driver Size: app 5.7*3.5cm/2.24*1.37'',Rope Length: app 18cm/7.08''