The Filter. Specifically engineered for cold brew coffee, this is not your run-of-the-mill mesh filter. We built our filter from the ground-up using etched stainless steel construction that's lightweight but shockingly sturdy. The 200 micron holes allow water to circulate at a rate that's ideal for making barista-quality cold brew.
The cap. Rumble Jar's secret sauce. Our patent-pending cap design allows the filter to be fully-nested inside the Mason jar, without interfering with the Mason jar's natural seal. As a result, your coffee stays both leakproof and airtight.
The Mason Jar. An ideal brewing + drinking + storage vessel with a legendary seal. Our patent-pending design keeps the seal intact, allowing your coffee to stay fresher since the jar remains airtight and more resistant to oxidation (aka the "coffee killer"). A good seal also keeps it from leaking all over your hands and kitchen.
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