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Rumble Go could be the world's most portable coffee maker. Just drop the Rumble Go filter into a compatible water bottle, and it's instantly transformed into a portable cold brew coffee maker that you can take anywhere.

The brewing process couldn't be easier: just add coffee grounds and water and give it a "rumble", and your coffee is now brewing!

The universal, extendable filter is compatible with a range of popular 16-32oz WIDE-mouth water bottles, such as Nalgene®, Hydro Flask®, Klean Kanteen® and CamelBak®. See a list of compatible bottles (or view the chart in the image gallery).

Includes:  + 18/8 Stainless Steel Filter, Specifically Designed for Cold Brew  + Food-Grade Silicone Cap & Extendable Base (available in 2 colors: Orangey-Red and Dark Black)

Rumble Jar is a line of award-winning cold brew coffee makers designed to keep the brewing process as simple as possible (1 minute prep time) while still producing professional-quality coffee. The secret lies in our stainless steel filter, which we built to the precise specifications of cold brew coffee experts, and then re-engineered it to work in tandem with Mason jars and a wide array of portable water bottles. Our initial product Rumble Jar was awarded as a "Kickstarter Project of the Year" in 2018, and its portable successor Rumble Go was recommended by Outside Magazine.

Rumble Jar Portable Cold Brew Coffee Filter--CHOOSE COLOR

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