★★★★★
Awesome product. I love it and would recommend it to anyone. Good quality, great design, and quick delivery.
My wife just told me to stop showing her my pen...
PROOF Vanguard Pen
PROOF Vanguard Pen
Precision. Purpose. Permanence.
Crafted from solid billet 6061 aircraft-grade aluminum, the Vanguard Pen is engineered for those who move with intention and demand the tools they carry do the same.
Its bolt-action mechanism is smooth, deliberate, and satisfying: a tactile nod to control in a world built on distraction.
Every detail was designed to serve a purpose:
• Stainless steel internals for uncompromising durability
• Brass clip with machine-finished contrast: a subtle standout against the satin-anodized body
• Writes anywhere with a black Fisher Space Pen #SPR4 cartridge: rain, grease, cold, or chaos
• Balanced for action and built robust enough to double as a self-defense tool
Regular price
$155.00
Regular price
$155.00
Sale price
Unit price
per
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Can I get refills online?
Sure can! Here are some Amazon links below!
Amazon Link: Fisher Space Pen #SPR4
Fisher.com: Black Medium Point Pressurized Cartridge
Amazon Link: Rite in the Rain All Weather Ink
What are the refill point sizes?
Fine - .9mm
Medium – 1.1mm
Bold – 1.3mm
What’s the difference between the PR4 and SPR4?
They’re the same refill. The “S” refers to the blister card packaging.
What is the shelf life of an unopened refill?
Approximately 100 years
How long do Fisher PR refills write for?
Fisher Pressurized Refills will write for over 12,000 ft. or approximately 2.5 miles.
Can I buy a refill anywhere local?
Yes. REI, Office Max, and many other outdoor and tactical shops, space centers, museums and pen specialists carry our (S)PR4 refill.
Ink Cartridge F.A.Q.
What was the ink cartridge that Neil and Buzz took to space?
The Astronauts on Apollo 11, and on every crewed space mission, used the AG7 Original Astronaut Pen - equipped with the same Fisher PR4, Black Ink, Medium Point cartridge as your PROOF Vanguard Pen.
Writes upside down. Writes underwater. Operates from -30 degrees F to 250 degrees F.
Pen Specifications:
If you appreciate craftsmanship, permanence, and the kind of everyday object that turns heads when pulled from your pocket — this pen is for you.
It may look different — because it is. Crafted in a bold ‘carpenter’s pencil’ shape, the PROOF Vanguard Pen dares to rewrites the rules.
- Materials:
- Body: 6061 Aircraft Aluminum
- Clip; 260 Brass
- Bolt Action Piston: 303 Stainless Steel
- Dimensions & Weight:
- 0.35" x 0.55" x 5.1"
- 1.4 ounces
- Ink Cartridge Compatibility:
- Fisher Space Pen #SPR4 cartridge/ Rite in the Rain All-Weather Cartridge (made by Fisher)
van·guard
/ˈvanˌɡärd/ noun: a group of people leading the way in new developments or ideas.
The Vanguard wasn’t born in a boardroom. It began as a decade-old concept, revived by PROOF co-founder and lead designer as a hands-on build challenge — a personal test in machining, tolerancing, and technical mastery. What started as a training exercise became an obsession.
The final result? A pen that had to exist.
REQUIRED: 1/16" ALLEN WRENCH
Replacing your ink:
- Unscrew CLIP BOLT ONLY using 1/16" Allen
- Pull off brass clip (place thumb on top of pen to avoid launching components)
- Remove piston rod, old ink & spring
- Insert new ink, spring & piston
- Reassemble
CARRY WITH CONFIDENCE
Customer reviews
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96%
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★★★★★
I really like this card case. It is incredibly slim and surprisingly practical. I have about 12 cards in it and it still fits easily in my pocket. The money band is tight, but easy to use, and the wallet feels very minimalist without being bulky. The proof of the design is how little space it takes up while still holding everything I need.
★★★★★
I have owned plenty of wallets, and the PROOF wallet is my favorite. Thank you guys for your ingenuity and hard work!
★★★★★
Great wallet, best one I have.
★★★★★
I took a chance on the mystery wallet and could not be happier. I received the Patriot and, if there is a blemish, I cannot find it; it is perfect! I rolled the dice and took a chance. This is my second Proof wallet, so I already know the quality and commitment to customer satisfaction.
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