Easy to use and clean. Just put the filter into a wide mouth jar, add coffee ground and water, then put the jar into the refrigerator for at least 24 hours, and you can get the most delicious cold brew coffee, It is easy to wash just by water, and dishwasher safe. The woven wire mesh screan is fine enough for cold brew coffee, it can keep the coffee ground particles in the filter. The coffee is brewed in a low temperature, the acid in the coffee ground not be extracted, so you can enjoy the natural flavor of the coffee. Multi-functions, it is not only a cold brew coffee filter, but also a tea filter and fruit infuser for wide mouth Jar.