Safety Technology Credit Card Foldable Knife – 2.75-Inch Blade, Blade Lock Safety, Wallet-Size Profile 3.38″ x 2.13″, 440 Steel, Fits in Any Pocket or Wallet, 0.1 lbs

A Knife You Actually Have on You Because It Doesn’t Take Up Any Space

The whole point of this knife is that it goes where other knives don’t. It’s credit card-thin, credit card-sized, and slips into a wallet slot, a coat pocket, or a bag without adding any noticeable bulk. When you need it, pop the blade lock and fold it into a usable pocket knife. When you don’t, it just looks like a black card.

It’s not going to replace your everyday carry knife. But it’s a solid backup option — or a first option for someone who doesn’t want to bother with a separate knife on their belt or in their pocket.

Who This Knife Is For

People who need a knife occasionally but don’t want to carry one all the time. The credit card format fits naturally into a travel wallet, a jacket pocket, or a work bag. If you’ve ever reached for a knife and didn’t have one — for a package, rope, tape, or a hundred other everyday situations — this covers that.

It’s also a good option for minimalist carry. If your everyday carry is already stripped down to phone, wallet, keys — this adds a knife without adding anything else. Slide it into a wallet slot and forget it’s there until you need it.

Hikers and travelers who want a backup blade that packs flat would find it useful too. It’s not a survival knife, but it’s a sharp, reliable blade in a form factor that goes everywhere.

How It Actually Works

The blade is stored flat inside the card body — it’s not folded in the traditional sense, it lies flush with the card face. To deploy, pop the blade lock (a simple tab on the side of the card) and fold the blade out from the card body. It locks into the knife position and stays there. Fold it back flat when you’re done and re-engage the blade lock.

The 440 stainless steel blade is the same grade used in mid-range pocket knives — it takes and holds a sharp edge without being brittle, and handles everyday cutting tasks without issue. At 2.75 inches, it’s within legal carry length for most U.S. jurisdictions, though local laws vary.

At 0.1 lbs and 0.13 inches thick, it’s genuinely unnoticeable in a wallet. The black card body doesn’t attract attention. Unless someone’s looking closely, it reads as a card.

Practical Details

Dimensions: 3.38″ x 2.13″ x 0.13″ — true credit card size. Blade length: 2.75 inches. Blade material: 440 stainless steel. Safety: blade lock keeps it closed. Weight: 0.1 lbs. Color: black. No sheath included — it is its own sheath when folded flat. Check local knife carry laws before purchasing.

For five bucks, it’s a sharp, well-made knife that goes anywhere — toss one in your wallet and you’ll probably forget it’s there until the day you actually need it.

Frequently Asked Questions