Review on ☕ Rumble Jar 32oz Mason Jar Cold Brew Coffee Maker - Next-Gen with 200 Micron Filter - Perfect for Coarse Grounds & Stronger Coffee - Includes Cotton Filter Sock (32oz Filter-only w/ Orangey-Red cap) by Lisa Montgomery

$29 premium price for a cylindrical coffee filter that is a bit different in design to the mesh filters sold here on Amazon especially if you there are already many inexpensive spherical glasses with a wide opening. I was hoping that with this new design I wouldn't have to filter out coffee grounds, but that's not the case. After 23 hours of brewing, there was still dregs and ground coffee at the bottom of the can (the coffee was ground at the grocery store). If I still need to filter my coffee, I might as well buy filters at a lower price. Plus, you'll be surprised at how little coffee boils in a 32-ounce can after you remove the filter filled with ground coffee. It really should have been 64 ounces (2 quarts). May return. I'll do a few more tries. **Updated 26 August 2018** I ended up returning this and received a different brand 2 liter system. It had a 100 micron (100 is thinner than 200) mesh filter that was better at filtering out the coffee sludge. I still use a regular coffee paper filter (with a paper strainer) to get rid of all the sludge. I still disagree with the statement that a 200 micron filter is more ideal for brewing. Also, the claim that one plate is more airtight than others is just plain silly. Of course, 3 ounces of coffee (about 1 cup) for 2 liters of water will last 18 hours in the fridge. Perfect for a few days of coffee.