WOMUL Mug Silicone Tea Infuser Mug Herbal Filter Diffusers Charming Pug Shaped 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. Fill with loose tea, hang over the side of your mug & leave to infuse Dishwasher safe top-shelf or utensil basket for easy cleaning. Safe for brewing tea in the microwave oven