Rumble Jar: Quart size (32oz), filter-only (no Mason jar included)
Rumble Jar: Quart size (32oz), filter-only (no Mason jar included)
Couldn't load pickup availability
The award-winning quart-size Rumble Jar filter, now available without the Mason jar. This is for the folks that already own a wide-mouth 32oz Mason jar and want to pair it with the best cold brew coffee filter on the planet.
The brewing instructions couldn't be simpler. 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:
+ 18/8 Stainless Steel Cold Brew Filter, compatible with any wide-mouth 32oz (quart size) Mason Jar*
+ Food-Grade Silicone Cap, Available in 2 Colors
+ Cotton Filter Bag (optional 2nd stage filter)
*Mason jar not included. See which jars are compatible
Please note: our filters are only compatible with wide-mouth quart size Mason jars. They won't fit in the regular-mouth version. If you need a wide-mouth Mason jar, the Rumble Jar Complete Kit includes a compatible Mason jar.
Need a larger size? Check out the Half-Gallon (64oz) filter or One Gallon (128oz) filter.
Need coffee? Get 25% off a bag of our Coffee for Cold Brew (Coarse Grounds or Whole Beans) when purchased with any other item.
Contents
Contents
Detailed Features
Detailed Features
Both Rumble Jar and Rumble Go have similar features that made them both crowd favorites.
The Filter. We engineered an entirely new filter designed specifically for the cold-brewing process. This is not one of those run-of-the-mill cheap mesh filters originally designed to brew hot coffee and then just repurposed for cold brew. Instead, our filters are etched out of a single sheet of 18/8 (Type 304) stainless steel, which makes them lightweight but shockingly sturdy. They're designed to last for years and are a total cinch to clean. Most importantly, the filter's 200-micron hole size allows water to circulate at an ideal rate for steeping coffee that has been ground coarsely, which is the same way the pros make cold brew. This filter is also flexible enough to allow a person to brew with medium-size grounds (commonly found in pre-ground packaged coffee). This filter contains no plastic parts, and it does not require disposable paper filters or reusable felt ones that are a pain to wash and end up costing you money to replace later. Those paper/felt filters just soak up the flavorful oils that are the hallmarks of good coffee anyway, so you won't miss them.
The cap. A patent-pending, FDA-approved, food-grade silicone cap allows the filter to be fully contained inside a jar or water bottle, which keeps it out of the way so it doesn't interfere with the jar/bottle's original seal. As a result, your container stays leakproof and your coffee brews in an airtight chamber. An airtight chamber prevents oxidation (aka the "coffee killer"), so the bottom line is you'll end up drinking better-tasting coffee. The cap's shock-absorbing design also protects the metal filter from dents and rattles, helping ensure it can last for years.
The Extendable Base (*found on the Rumble Go only*). The Rumble Go's silicone base features 11 different height adjustments that extend the filter by up to 1.5" so it can fit a wide range of popular 16-32oz wide-mouth bottles. The universal design means you can keep using your favorite water bottle or repurpose an old one that may have fallen out of use.
The Mason Jar (*for the Rumble Jar quart and half-gallon filters only*). An ideal 3-in-1 brewing + drinking + storage vessel with a legendary seal. Our patent-pending design ensures that this legendary seal stays intact as originally designed, allowing your coffee to stay fresher since the jar remains airtight and resists oxidation. Of course, a good seal also keeps it from leaking all over the place. And if an accident happens and you ending up breaking your jar, the good news is how easy and cheap it is to replace a Mason jar. No need to shell out for an overpriced, proprietary piece of glass.
Want to see it in action? Watch our 92-second video
Ready to shop? Click here
Reviews
Reviews
Press
Kickstarter Project of the Year Award | Architectural Digest review | high praise in Mashable | Cooking with Jack Show Part 1 & Part 2 | Outside Magazine review | Seattle Coffee Gear review | Wall Street Journal Recommendation | SF Gate's "Best Budget Camping Coffee Maker"
Crowd
one very excited TikToker | sterling review despite camping on a cold rainy day | a pretty candid Reddit feed | an incredibly thorough unboxing video | A lifestyle product reviewer that just gets it | Kickstarter comment feed with lots of happy backers
Seattle Coffee Gear review
Discounts
Discounts
Some ongoing promotions to help you save:
- Free U.S. Shipping. All orders of $39+ are eligible.
- Buy 1, Get 1 for 25% Off + Free Shipping. Discount is automatically applied to your cart as soon as 2+ items are added (i.e. no promo code needed). If your adjusted total comes to $39+, you get Free U.S. Shipping too! (note: discount does not apply to accessories or bundles)
- Save $6 with a kit-plus-coffee bundle + Free Shipping*: Rumble Jar Kit + Coffee bundle
- Save 25% with a 3-pack of coffee*: Coffee for Cold Brew 3-pack
- Bulk orders and volume discounts at 25-35% Off: see Bulk Order page
- Just buying one item? Our email subscribers get some exclusive discounts, including a discount on the first order. Sign up here to save on your initial order: Rumble Jar email signup
*note: bundle discounts do not combine with BOGO discounts
Shipping & Returns
Shipping & Returns
Orders of $39+ qualify for Free U.S. Shipping. In addition to Free Shipping, customers automatically receive a 25% discount on any second item in their cart (see discount details).
Orders under $39 qualify for flat-rate shipping of $3 to anywhere in the U.S.
For additional shipping and returns info, please see our Shipping & Returns page
Instructions & FAQ
Instructions & FAQ
Brewing Instructions: Step-by-step instructions (with gifs!) can be found on our Brewing Instructions page, and we have a bunch of specific tips and tricks in our FAQs.
Cleaning Instructions: Our simple design ensures an ultra-quick cleanup. All of our Mason jars, stainless steel filters and silicone caps/bases are dishwasher safe. The only components that require hand-washing are Rumble Jar's reusable cotton filter bag as well as Rumble Go's optional insulated bottle.
More questions? We have a pretty thorough FAQ section. Otherwise you can always email us.
-
Free Shipping on orders of $39+
U.S. Shipping is free on all orders of $39+, so why not get one for your home and another for the road?
-
Automatic 25% Discount on a second item
Order 2+ items and receive a Buy One, Get One discount for 25% off your second item. Exclusions apply.
Prep time: 1 minute. Clean-up: 30 seconds.
A little filter with a big fan club
this Rumble thang makes the Best coffee ever - i love it!!! i set my alarm during the day so i can remember to fill it up ... love how the coffee tastes - i live in Kona and have some of the best coffee at my fingertips - Rumble is MEAN
Loving this thing!!! My boyfriend got served an ad for it and we bought it immediately. I don't drink coffee, but I make his and this has made the process so much easier and neater. Brilliant little invention
I love this product. It’s the second one I’ve gotten because I need more iced coffee made this way. It’s easy to use, good for the environment, and the coffee taste great! thank you rumble jar for a great product.
Whoever thought this up is a genius! Just sorry I waited so long to order one.
works great. so easy to use and to. clean. we haven't stopped using it. can't get enough cold brew with this hot summer weather.
Amazing product! Super simple, easy to use, and makes fantastic coffee. Anyone who likes iced coffee should spring for this.
Enjoy cold brew for many years. Trying this product to see how its different and/or same. So far good. It's not a concentrate, which isn't bad, just different.
Exactly what i need to make sous vide iced coffee in large mason jars. Working great!!!
This filter and cap are a great design and work really well and fit a quart jar perfectly. A+ for design and function.
I've tried making cold brew before, but it never turned out well. I'm pretty particular about my coffee, so I gave up. But...it's summer and it's hot and I want good icy coffee. I considered other options, but I really like how simple the Rumble Jar is and its use of an easy-to-replace mason jar. Anyway, my first brew was SO good! I finetuned the grind setting and am now making excellent cold brew that lives up to my standards!
purchased for my wife. she loves it.
Love the ice coffee! I bought course grounds it came out great! I had the mason jar so i just looked up what other ppl used for measuring.
This product is so easy to use and makes delicious coldbrew!
I got this for my college dorm. It makes perfect cold brew overnight that I can enjoy throughout the week. Highly recommend.
First time cold brewing. Simple and tastes good. All I have to compare it to is store bought CB.
in use nonstop for 3 years time to replace with a new one
I purchased this after cracking the glass on my cold brew maker and love how much easier it is to use - I don't have to spend the time running water slowly through the grounds in the filter, and should I break the glass again (very likely), I can just swap out for a new Mason jar.
The one downside is that the cold brew does need to be filtered before drinking, but the cotton bag provided works well as a filter and it's a pretty quick process.
Perfect for cold brewing. Simplest and no plastic involved. 👍
The good: keep grounds submerged and fits in a 32 oz. mason jar comfortably.
The bag: cleaning this cumbersome. grounds will stick and you will need to swirl with water a few times. The side edge of the canister feels unfinished and is "uncomfortable" to hold (sensory issue more than anything).
Bottomline: If you don't mind taking some extra time to wash out the grounds by swirling a few times with water and weird texture issues with the tool itself, it is a decent substitute for single-use coffee bags.
My children and I really love the Rumble Jar. Easy to us and has saved us money.
My bad! Accidentally ordered the mason jar version and not the travel version… i ended up bringing two glass mason jars on my cacation, just in case, and it worked out great. Ill be ordering the To-Go version for my next trip! So nice to have cold brew in a tropical vacation and not be a victim to the drip machine in the villa!
I really like how simple this is and easy to use. Going to get another one as well for camp!
Rumble Jar: Quart size (32oz), filter-only (no Mason jar included)
This is awesome! We have a fancy espresso maker at home so at home we will use it for afternoon decaf cold brews. But this is our new perfect coffee maker when we are camping in our van!
I bought a rumble jar and we like it so much I bought four more for gifts. Incredibly thoughtfully designed. I love that it fits perfectly in a canning jar.
I ordered these filters as gifts and I ordered one for myself to try!
I drink cold brew nearly every day, so I was excited at the prospect of making a smaller amount.
It’s a great gadget! Easy to use, the coffee tastes great, and I can’t wait to share them with my friends.
A word to the wise: DEFINITELY use the filtering bag to remove some sediment.
This requires little to no effort, extremely cheap and, you guessed it, makes coffee. As someone who just wants to replace her husband’s energy drinks with something cold & caffeinated, I am glad I went with this.
Easy to use and clean, makes delicious coffee. Game changer!! I'm ordering a second one and giving it to my college bound daughter this Fall for her dorm room.
We liked the first filter and mason jar combo so much that we placed another order to increase the brewing amount.
I got this as a gift for my husband, a coffee connoisseur of sorts. He made a batch of cold brew that day (well, overnight), and he had rave reviews! It’s so easy to make a batch, the coffee tastes superb, and the clean up is easy. Thanks for making a great product!
Love this. Bought another brand last year and could not seal my mason jar. This goes all the way in the mason and the the lid fits and seals. Winner Winner
Meet our next-gen cold brew filter
To build a better cold brew filter, we needed to re-think the tiniest details. It might look simple, but it's packed full of smart features. Come see what makes it a better cold brew filter.
