How to use the Warden Capsule
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Why Warden
Waterproof
O-ring sealed for complete protection against rain, spills, and humidity.
Secure and Robust
Machined from solid aluminum and anodized for lasting corrosion resistance.
Compact
Small enough for a pocket, travel case, or drawer.
Colour-coded
Available in six colors, so your Capsule looks as unique as what's inside it.
Technical specifications
Dimensions
97.2 × 29.4 mm (L × Ø)
1 to 3 YubiKey 5C NFC keys
Materials
Anodized aluminum
Rubber O-ring
Foam
Box contents
1 Warden Capsule
2 Foam inserts (pre-installed)
Whether it's sitting in a drawer at home or crossing a border in your carry-on, the Warden Capsule is the difference between "probably fine" and actually protected.
Questions, answered
Everything worth knowing before you order.
Will my YubiKey fit?
The Capsule is designed around the YubiKey 5C NFC and holds up to three standard-size keys at once. The included foam inserts are designed to keep a single YubiKey 5C NFC snug. Smaller keys will fit, but won't sit as tightly.
If you're unsure about your specific model, check the dimensions in the Specifications section above.
How waterproof is it, really?
A rubber O-ring seals the lid, which keeps out rain, spills, and humidity — the everyday moisture that corrodes contacts over time. It handles everyday carry without trouble.
What does shipping cost?
Shipping is free on all orders. Once your order ships you'll receive tracking by email. Delivery times vary by destination.
Find out more in our shipping policy.
Can I return it?
Yes. Our return policy covers what's eligible and how to start a return.
How does the Discount work?
You'll pay less per Capsule when you order more than one.
Order two and save 10%; order three or more and save 15% — applied automatically at checkout, with no code to enter.
Mixed colours count toward the total, so a set in different colours saves exactly the same as a set in one.