The Cavity Card. A New Way to Store Your Coins.

cavity card

Is the Cavity Card the solution to all your Coin Storage Problems?

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Long have modern day wallets suffered from the issue of coin storage. Some men simply disregard the commodity with an iron fist. “Coins live in the pocket” they exclaim from the depths of their inner manhood. While others simply adhere to the very solution that’s been hitting us in the face for years. A wallet with a coin pouch/zip. I joke but as wallets become increasingly smaller they become less functional by default and unfortunately, the coin pouch is always the first to get removed. If I was to pull a wallet out of my wallet draw (yes I have a draw) then I’d guarantee at least 90% of them won’t accommodate coins. That’s the harsh reality of the industry and the way it’s become over time.

cavity card

But with the cry for help be answered?

Potentially. Introducing the Cavity card. This very simple and unusual piece of plastic and Tyvek claims to answer all your coin storage needs. So how does it work? And does it actually work the way it’s described? Well in a word.. maybe. You see the cavity just sometimes works and sometimes doesn’t. It makes sense as the cavity can’t magically design itself around every wallet being made ever. Although the cavity is designed to take the shape of a credit card It’s thickness and flexibility can’t compliment every type of wallet. It’s just no possible and I’ve taken this into consideration in my review. 


How does the Cavity Card work?

The cavity is a simple premise. Coins and other small items lie flush against the inside of the Tyvek. The cavity card then, being shaped like a credit card, can be placed in a card slot to keep the coins in place. A pretty unique idea if you ask me. At just 2.3mm thick, weighing than 3g and strong from being made from Nylon and Tyvek it really has some potential. I’ve had a good play around with which wallets work and which don’t. In general, the major issue with the cavity card isn’t its capacity to actually store the cards but to access them when you need it. It’s very fiddly to use and you’ll find as you pull it to access the coins they spill out everywhere. I found on average you end up either having to take the entire cavity out of the wallet to access cards or simply can’t access coins or items near the bottom of the cavity.

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Bi and Tri-Folds (including slim variants).

Hopefully you won’t need to use these wallets with the cavity, but in general card slots are to tight and it provides to much bulk (even at 2.3mm).

Elastic Wallets

Generally speaking, the cavity works very well with elastic wallets. Those such as the Crabby Wallet, TGT, and the E8 Elephant work well with it.

Hard Material Wallets

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Again, generally speaking, metal wallets and any hard material wallet such as the Titanium wallet, and Fusion wallet work well again. But you may end up sacrificing some card space to fit the cavity in.


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Your decision to buy a cavity should be influenced by the wallet you own. It’s probably best to ask around some forums for those who have tried the cavity with your specific wallet. Another point to add is the price is quite steep considering you can purchase many wallets (ironically with coin slots) for the same price of the cavity. It comes in at between 12€ – €16.50 (not including P&P).

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Buy Now

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Posted by James

  1. One point to add about using the cavity card, based what I read elsewhere from users – For one piece minimal wallets/cardholders, the orientation of how you use your wallet matters, as the cavity card is a tray that is entirely open on one side.

    I’ve read that some users have absent-mindedly pull out the cavity card from their wallets/cardholders, and have all the contents spill all over the ground. Not really an issue for the more conscientious people out there, but nevertheless a possible scenario. As the review has mentioned, the cavity card is a generic add-on, not tailored to any wallet in particular, so users have to work with it.

    I suppose with coins or even thinner items, if the cavity card tucked well into a tight pocket that covers it well, there lies a possibility of the item slipping out of the cavity card into other parts of the pocket.

    But otherwise, it is definitely a possible add-on option worth exploring for the many cardholder-styled minimalist wallets out there, to hold odd sized items like keys if nothing else.

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