This is by far my most favorite loose leaf tea filter. I have tried many shapes and sizes and materials. I find this filter keeps all teas inside instead of finding tea leaves or particles in my water. It fits perfectly on so many mugs. It is spacious and therefore allows the tea leaves to expand really easily. It is a little challenging to clean fully, but not impossible. I love that it has a little lid to help get the best steep. And it makes a wonderful little tray to set your wet tea filter on once you’re done steeping.