Made of stainless-steel mesh for easy cleaning and long-lasting use. The arms rest on the edge of a cup and the lid keeps the contents hot until the desired strength is reached. This permanent filter is ideal for brewing tea, herbal tea, fruit infusions or even coffee. Fits 2.25 inch diameter openings or larger. Dishwasher safe. Empty tea in garbage or compost and place securely in dishwasher for easy cleaning.