Now you can make barista-quality cold brew coffee at home. Rumble Jar is an award-winning cold brew coffee maker, designed to work in tandem with the classic Mason jar. This 4-piece brew kit is all the equipment you need to make professional-grade cold brew coffee right at home. Just take your favorite coffee beans, grind them coarsely, add tap water and give it a rumble. Total prep time takes less than a minute, and by the morning you'll have delicious cold brew coffee ready to drink. To see what makes this filter ideal for cold brew, check out this product teardown. Includes: + 32oz Wide-Mouth Mason Jar + 18/8 Stainless Steel Cold Brew Filter + Food-Grade Silicone Cap, Available in 2 Colors + Cotton Filter Bag (optional 2nd stage filter) Need just the filter? Standalone filters without a Mason jar are available in Quart (32oz) and Half-Gallon (64oz) and One Gallon (128oz) sizes. Need coffee? Save $6 and get Free U.S. Shipping with our Kit + Coffee Bundle. Available with Coarse Grounds or Whole Beans.