This is a versatile infuser for loose leaf teas - the handles allow for it to fit multiple vessels from mugs to kettles and jugs for cold-brew. It also features features tiny 0.3 mm holes, which are fine enough to  hold the finest tea leaves without spilling into your tea and a large basket that allows the hot water to thoroughly infuse the leaves.
With the long handle, simply hang the tea infuser inside your cup, add your loose leaf tea and steep.  After steeping, simply discard the leaves. You can also retain the leaves for a second brew if they're not spent.