The woven wire mesh screan is fine enough for cold brew coffee, it can keep the coffee ground particles in the filter.Easy to use and clean. Just put the filter into a wide mouth mason 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 home made cold brew coffee, It is easy to wash just by water, and dishwasher safe.The coffee is brewed in a low temperature, the acid in the coffee ground will 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 mason Jar.size:8.4*15cmMaterial:stainless steelcolour:SilverPackage Contents:1 * coffee filter cartridgeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.