A hardware wallet's whole job comes down to one thing: real randomness. Get the entropy right and your keys are unguessable. Get it wrong — a weak source, a predictable seed — and everything downstream is compromised, no matter how strong the rest of the stack looks. Bitcoiners learned that lesson the hard way, and this tee turns it into the public service announcement the space apparently needed: practice safe entropy.

The dice aren't decoration. Rolling your own is the old-school, trust-nothing way to generate a seed you know wasn't handed to you by someone else's code. It's a design for the people who verify their own randomness, check their own firmware, and assume nothing — worn best at meetups and conferences where the phrase gets a knowing laugh from anyone who's been paying attention. Available in Natural and Athletic Heather.

Here's the rundown: a comfortable 4.2 oz./yd.² (142 g/m²) tee in 100% combed and ring-spun cotton, with a little polyester worked into the heather shades. It comes pre-shrunk so the fit doesn't shift after washing, and side seams with shoulder-to-shoulder taping keep the structure crisp through heavy rotation. Blank product sourced from Nicaragua, Mexico, Honduras, or the US.

Size guide