describe Well-Designed: Its multiple very fine holes allow for perfect straining of tea or herbal tea without letting the leaves go through your teapot. It works well with almost all mugs (except very large ones) Two handles: The two handles hold the containers well and allow you to pick them up while brewing without burning your fingers. Fits easily into mugs, teapots and glasses Dimensions: inner diameter 12.5cm outer diameter 6cm, height 7.5cm, suitable for most mugs and teapots, the inner volume is large enough for the leaves to circulate perfectly, this strainer will be a great helper for making tea in the office, at home for your friends and family Lid purpose: it has two functions, the lid is very useful, on the one hand, the flip-up lid allows you to put the filter on it after use, on the other hand, when you want to reuse it stay in the caron filter You can put the filter on it when you are drinking tea, it will not leak everywhere and keep the table clean Cleaning Note: Can be washed in the dishwasher (no signs of wear or oxidation) or hand wash in hot water, Before buying, please confirm the diameter and height of your cup or mug, avoid the filter not suitable for your tea set ,