If you’re serious about fresh coffee, you need to see this vacuum coffee canister in action.
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Whole-bean coffee really starts to dull within just a couple of weeks of opening the bag. That can pose a problem, especially when you bring home a Costco- or Sam’s Club-sized bag. And if you’ve splurged on specialty-roasted or limited-release beans, watching that flavor fade is even more painful.
The solution? A vacuum-sealed canister like this one from Fellow. I was slightly skeptical at first. But after trying it myself and smelling that fresh-roasted aroma every time I opened the lid, I was sold.
Here’s why this clever little canister earns a permanent spot in my cupboard, and how it can keep your favorite coffee (and plenty of other pantry staples) fresher for longer.
Atmos Vacuum Canister
This airtight canister features a vacuum pump in the lid to remove air and keep coffee fresher longer.
How does it work?
The Fellow Atmos Vacuum Canister is built to keep whole-bean coffee fresher for longer. It features an electric vacuum pump in the lid that removes air with the press of a button, slowing the oxidation that causes coffee to lose its flavor. When you’re ready for a refill, just press the button again to release the seal. The lid recharges via USB-C, so there’s no need for disposable batteries.
The Electric Atmos comes in two sizes and three finishes: black or white stainless steel, or clear glass. Prefer something simpler? There’s also a manual version that creates a vacuum seal with a quick twist. The Manual Atmos is also available in a third, smaller size.
While it’s ideal for espresso lovers, the Atmos isn’t a one-trick pony. It’s also great for storing dry pantry staples like rice, pasta, nuts, granola and other snacks. One thing to note: it’s designed for whole-bean coffee, not pre-ground coffee.
The Proof Is in the Marshmallows
A few months ago, I came across a social media video from Fellow showing marshmallows sealed inside the Atmos canister. As the air was removed, the marshmallows puffed up like little balloons. When the vacuum was released, they shrank back to normal. Naturally, I had to see if it worked IRL.
It did.
To be clear, you probably shouldn’t store marshmallows in a vacuum-sealed container. While airtight storage helps keep them fresh, a vacuum causes the tiny air pockets inside each marshmallow to expand, leaving them misshapen.
That’s why the experiment is such a great visual test. Those expanding air bubbles prove the canister is removing air and creating a true vacuum. And when you’re ready to open it, you’ll hear a satisfying whoosh as the seal releases, yet another sign the vacuum has held.
3-Week Fresh Test
In my experience, coffee tastes and smells its best for about two weeks after opening the bag. To see whether the Atmos could stretch that window, I ran a simple three-week test using the same beans stored in three different containers: the Fellow Atmos glass canister, a cardboard canister with a plastic lid, and a standard coffee bag.
The biggest difference was obvious the moment I opened them.
The beans stored in the Atmos had a noticeably richer, fresher aroma than the other two. By comparison, the beans in the cardboard canister and coffee bag had lost most of their fragrance. Visually, all three batches looked about the same, and I couldn’t confidently taste a significant difference. Maybe my palate isn’t refined enough, but the aroma alone made a compelling case that the Atmos was doing something.
That’s a big win for me because I love a coffee that smells as good as it tastes. Lately, I’ve also been blending regular and decaf beans to cut back on caffeine. That means keeping two bags open at once and working through them more slowly. With the Atmos, I can premix my beans, store them together and feel a lot better about preserving their freshness while I finish the batch.
Choosing the Right Canister
Many coffee experts agree that whole beans stay freshest when stored in an airtight container at room temperature, away from heat, moisture and direct sunlight. (The finer points are up for debate, but that’s the general consensus.)
If your canister is going to live on the countertop, the stainless steel Atmos is the better pick because it blocks light that can speed up staling. I keep mine in a cupboard, so I opted for the glass version. Plus, it made it much easier to show what was happening during my tests.
Glass has a few other perks, too. It’s non-reactive, so it won’t affect the flavor of your coffee, and it’s easy to see what’s inside without popping off the lid, especially handy if you’re storing different beans or pantry staples.
Beyond Coffee
As noted, the Atmos isn’t limited to coffee beans. It’s also a great storage solution for dry pantry staples that benefit from limited exposure to air.
Think rice, pasta, flour, nuts, seeds, dried beans, tea, spices, baking ingredients, granola and dried fruit. While it isn’t a replacement for proper canning or long-term food preservation, the vacuum seal can help these foods stay fresher by slowing oxidation.
If you’re the type of person who buys pantry staples in bulk, an Atmos canister can help protect both their flavor and freshness until you’re ready to use them.
Where to Buy
Atmos Vacuum Canister
The Electric Atmos locks with the push of a button, while the Manual Atmos twists to lock.
You can shop the Fellow Atmos Vacuum Canister directly from Fellow for $70-$80, depending on the size you choose. The manual version is a bit cheaper, priced from $30-$40.
You can also find the clever canister at Williams Sonoma, Crate & Barrel and Macy’s.
